A lot of people are excited about fully self-driving cars.
But what I actually want isn't just "a car I don't have to drive."
I want something further down the road.
Get in the car at night.
Sleep on a futon.
The car drives itself.
Wake up in the morning at a hot spring town, the beach, or the mountains.
Wander around a bit.
Tired? Nap in the car again.
At night, play games or read manga in the car.
Next morning, you're somewhere else.
In other words, what I want isn't a car. It's a rolling futon base.
Not having to drive isn't enough.
I don't want to doze in a seat. I want to sleep on a futon.
If that ever happens, travel will mean something very different.
An Overnight Bus Only Solves "You Don't Have to Drive"
The classic long-distance option is the overnight bus.
You board at night and arrive at your destination in the morning.
At first glance, that sounds close to the ideal.
In reality, it's quite different.
An overnight bus just means you don't have to drive.
As a place to sleep, it comes with a lot of limits.
- You sleep sitting up
- You can't roll over
- You get a lottery draw on who sits next to you
- There's noise
- There's vibration
- Your neck and lower back tend to hurt
- You wake up with a stiff, aching body
- It's not a fully private space
- You have little freedom with your luggage or posture
So an overnight bus is a handy way to get around, but it's not "sleep on a futon and wake up at your destination."
What I really want isn't just transport.
It's travel that actually works as sleep.
What I Want Isn't a "Car" but a "Bedroom on Wheels"
The ideal fully self-driving vehicle is probably less a car and more a small room.
What it needs:
- You can lie down flat
- You can roll over
- Temperature control
- Good soundproofing
- You can dim the lights
- You don't feel uneasy even if you aren't watching the road
- Restroom breaks and charging are planned automatically
- You wake up at your destination
- It doubles as a rest base after you arrive
- You can play games, read manga, use your phone, or nap inside
Something like that.
This isn't just a car.
It's a bedroom on wheels.
It's a rolling futon base.
If this technology arrives, travel will change a lot.
Travel Time Goes from "Draining" to "Sleep and Recovery"
Getting around today is pretty exhausting.
If you drive yourself, you have to stay alert the whole time.
You can't sleep.
You can't look at your phone.
You can't play games.
You can't read manga.
You can't even write an article.
Even when you're tired, you have to concentrate.
And you carry the risk of an accident.
Even in the passenger seat or on a bus, there's motion sickness.
Look at your phone and you feel sick.
The shaking makes it hard to focus.
All you can do is sit and sleep.
But in a fully self-driving rolling futon base, travel time changes.
Sleep while you move.
Recover while you move.
Play while you move.
Get a bit of work done while you move.
The trip itself becomes free time.
That's a big deal.
More than arriving fast, what matters is not being worn out along the way.
Once This Exists, You Could Travel All the Time
If the rolling futon base becomes real, travel gets a lot lighter.
For example:
Take a bath at home in the evening.
Slip into the futon in the car.
Sleep.
In the morning, you're at a hot spring town.
Eat breakfast.
Do a little sightseeing.
Go to a café.
Feeling sleepy? Nap in the car.
In the evening, move to another town.
Play games in the car at night.
Sleep again.
Next morning, you're at the sea.
That's not really a trip anymore. It's an expansion of your everyday living area.
Booking hotels is less of a hassle.
Long-distance driving fatigue goes away.
The reluctance to spend hours on the road fades.
You don't have to psych yourself up with "okay, we're going on a trip." You just go while you sleep.
If that future arrives, I think a lot of people would be on the move constantly.
At the very least, I'd be traveling all the time.
Forget Flying Cars. Please Go All In on This First
When people talk about future vehicles, flying cars come up a lot.
Of course, flying cars have their own appeal.
You could avoid traffic jams.
Travel times would shrink.
Trips between cities would change.
They might even help in disasters or for emergency transport.
The FAA, in the context of Advanced Air Mobility, also mentions electric, automated, vertical-takeoff aircraft and air taxis.
So flying cars have real technical and social value.
But if I rank what would change daily life the most, here's how I see it:
You don't have to fly. First, just move me safely while I sleep.
Recovery over speed.
I'd rather sleep on a futon than fly.
More than getting there fast, I don't want to lose my own time and energy along the way.
If a self-driving car lets me sleep while it carries me, that alone changes life a lot.
Rolling futon base over flying car.
That's the one I want people to go all in on.
Reality 1: Tesla's FSD Today Is "Supervised"
So how far along are we really?
Tesla's Full Self-Driving sounds fully self-driving, going by the name alone.
But officially, it's Full Self-Driving (Supervised).
In other words, it needs supervision.
Tesla itself says FSD is a driver-assistance system to be used by a driver who is fully attentive, and that it doesn't turn a Tesla into a fully autonomous vehicle.
So in a Tesla today, you can't:
- Sleep
- Keep staring at your phone
- Lounge in the back seat
- Lie down on a futon
- Wake up at your destination
I do want to say, "Go for it, Elon."
But right now, it's still not a car you're allowed to sleep in.
Reality 2: Waymo's Robotaxis Are Pretty Close
On the other hand, robotaxis like Waymo's have become very real.
In some areas, they're running as actual driverless taxis.
As "travel where you don't have to drive," that's pretty close.
You don't drive.
There's no human in the driver's seat.
It takes you to your destination.
That definitely feels like the future.
But it's still not the same as "climb into a futon in my own car and sleep."
Robotaxis are basically for getting around within a city.
You get in.
You sit.
You arrive.
You get out.
It's not a bedroom.
It's not a rolling futon base for long-distance trips.
So parts of self-driving are already very real.
But we're still some distance from the ideal of "sleep and wake up at your destination."
Reality 3: Even in Japan, Everyone Has to Wear a Seatbelt
The big real-world wall is the seatbelt.
In Japan, seatbelts are required in every seat, including the back.
The National Police Agency also tells people to wear seatbelts in all seats, including the rear, and states that wearing them in the back seat is required on all roads.
The Ministry of Land, Infrastructure, Transport and Tourism also explains that since June 1, 2008, a revised Road Traffic Act has made seatbelts mandatory in all seats.
So in an ordinary car today, lying on a futon while the car is moving is hard to pull off.
What you can do is:
- Sit in a seat
- Put on the seatbelt properly
- Recline and sleep
That's about it.
It's very far from the ideal of lying down and sleeping on a futon.
"Sleeper Safety Standards" May Be a Bigger Wall Than Self-Driving
This is the important part.
Even if full self-driving works, that alone doesn't give you a rolling futon base.
Because there's the question of how to protect a person who's lying down asleep.
For example, you'd need things like:
- A way to hold the body in place even when lying down
- Seatbelts designed for beds
- Airbags designed for beds
- A bed structure that keeps your body from being thrown in a crash
- Letting you roll over while still restraining you
- Support for sleeping on your side, back, or stomach
- Head protection in a sudden stop
- Safety standards for the interior layout
- Legal rules
- Sorting out insurance and who's responsible
In other words, self-driving isn't the only problem.
We need technology for being carried safely while asleep.
It might even be harder than full self-driving.
Even a Camper Van Isn't the Same as Sleeping on a Futon While Moving
You might think, "Can't I sleep in a camper van?"
True, camper vans have beds.
But those are basically for when the vehicle is parked.
While driving, the occupants are expected to sit in seats with seatbelts.
So a camper van is a "car you can stay overnight in," but not a "car where you can safely sleep on a futon while it's moving."
This part matters too.
What I want isn't sleeping in the car overnight.
It's sleeping while on the move.
Still Likely Sooner Than a Warp Device
Even so, there's hope.
It seems likely to come sooner than a warp device.
Warp is very far off, going by the laws of physics.
But self-driving and in-car safety design are at least on the same continuous road.
Driver assistance already exists.
Robotaxis already exist.
Self-driving AI is advancing.
Interior space design is advancing.
Sleeper safety design could become a subject of research if people want it to.
So a rolling futon base should arrive before a true warp.
That said, the order will probably go like this:
- Driver assistance gets better
- Robotaxis spread in some cities
- Self-driving advances under limited conditions, like on expressways
- Privately owned cars free you from driving for longer stretches
- The car interior turns into a living room
- Sleeper safety standards get written
- The rolling futon base appears
It's still a long way off.
But I don't think it's only a fantasy.
Toyota, Tesla, Waymo: I Don't Care Who, Just Please Do It
Honestly, I don't care who builds it.
Toyota is fine.
Tesla is fine.
Waymo is fine.
A Chinese automaker is fine.
A startup I've never heard of is fine.
All I want is:
A legal, safe rolling futon base that gets you to your destination while you sleep.
Go, Toyota.
Go, Elon.
Go, Waymo.
Flying cars are nice too, but please do this one first.
I don't need to fly.
I want to lie down and sleep.
This Technology Would Change How We Live
If a rolling futon base arrives, daily life changes a lot.
It will especially speak to people who want a free-spirited way of living.
- The bar for going on a trip drops
- Long-drive fatigue disappears
- Booking hotels is less of a burden
- You can sleep while moving
- The car interior becomes your own room
- It's easier to reach the countryside and nature
- Hopping between hot springs, beaches, mountains, and cafés gets lighter
- You can work or write articles while on the move
- The line between home and travel gets thin
This isn't just a transportation revolution.
It's a revolution in where we can live our lives.
Travel today means planning, booking, driving, getting tired, staying somewhere, and going home.
With a rolling futon base, travel gets much closer to daily life.
Sleep.
Wake up.
You're on the move.
Play.
Sleep again.
That's pretty much the dream.
Realistic Stepping Stones
The full rolling futon base is still far away.
But there could be stepping stones along the way.
1. A Very Comfortable Self-Driving Car with Deep Recline
You stay in a seat but can lean back quite far and sleep.
You still wear a seatbelt.
It's not a real futon, but it's more comfortable than an overnight bus.
2. Long-Distance Robotaxis
Robotaxis that handle trips between cities, not just inside one.
It's less about sleeping and more about long trips where you don't have to drive.
3. Self-Driving Camper Vans
Belted into a seat while moving.
Sleeping in the car while parked.
It makes both travel and lodging much lighter.
4. Low-Speed, Dedicated-Road Sleeper Vehicles
Not on expressways, but on limited routes or dedicated lanes, vehicles you can lie down in would run.
This might be the more realistic way to start.
5. Self-Driving Sleeper Buses
Before privately owned cars, they might show up as sleeper buses or sleeper shuttles.
It's close to the idea of a sleeper car on a train.
Safe restraint design would still be needed.
What We Need First Is Research on "Sleeping While Moving"
What I want people to go all in on next isn't just self-driving.
It's how to protect people who are asleep while moving.
There are plenty of research topics here.
- Crash safety for sleeping postures
- Seatbelts for beds
- Airbags for beds
- Low-vibration suspension
- Acceleration and braking control that causes less motion sickness
- Driving control that doesn't disturb sleep
- Balancing privacy and safety
- Notifying you when it's time to wake up
- Restroom breaks and charging plans
- Security during self-driving
- Insurance for long-distance robotaxis
As these advance, "sleeping while traveling" starts to feel real.
It's not enough for a car to just drive itself. It has to drive in a way that lets people sleep.
That's what I want people to go all in on.
Wrap-Up: I Don't Need to Fly. I Want to Sleep on a Futon and Get There.
The reason I'm looking forward to full self-driving isn't just that driving gets easier.
What I really want is not to lose my travel time.
No need to focus on driving.
Looking at my phone is fine.
Playing games is fine.
Reading manga is fine.
Sleeping is fine.
I wake up and I'm at my destination.
If that happens, travel gets a lot lighter all at once.
But reality is still far off.
Tesla's FSD is supervised.
Waymo's robotaxis are advanced, but mostly for getting around within a city.
In ordinary cars, seatbelts are required in every seat.
To sleep lying on a futon, we need sleeper safety standards.
Still, it seems likely to come sooner than a warp device.
Flying cars are a dream too.
But personally, what I want people to go all in on first is:
A car that lets you move safely while you sleep A rolling futon base where you sleep and wake up at your vacation spot
Toyota, Tesla, or Waymo, any of them is fine.
All I ask is that they let me sleep on a futon and take me to my destination.
