Rubber Car = External + Internal Airbag

This one-seater urban car is basically a rubber egg on wheels.

The egg-shell is an airbag that is kept under a constant pressure while the car moves. In case of an accident, the entire drivers cabin acts as an airbag.

1. This is an electro-pneumatic car; as in ordinary electric cars, when you brake, you can recover some energy back into the battery. We do the same, but with air. The air gets compressed and stored in a small tank. This air then keeps the egg-shell under pressure, so that it is rigid. We always keep a reserve of compressed air in the tank, though.

2. In case of an accident, the entire eggshell inflates like an airbag. Even though this car is very light-weight, and you will be thrown into the air in case of an accident, you will simply bounce to the ground safely after a while.

3. Advanced inflatable fabrics exist that are stronger than steel! [See link].

4. The advantage of this car is that it is basically a shell on a chassis. The shell is almost entirely independent from it, and just rides on it (attached to it with clips, like ski-boots on skis). This chassis can be therefor be foled up, the inflatable shell, deflated, and the car parked taking up a very small space.

I made two very rough sketches of it [see links]; the small windows still have to be put in it. But they would pop-out in case of an accident, as the egg inflates.