Food production is now so energy-intensive that more carbon is emitted providing a person with enough calories to walk to the shops than a car would emit over the same distance.
Citing calculations made by environmentalist author, Chris Goodall.

I realized both the upper and lower body must be held securely in place with one strap across the chest and one across the hips. The belt also needed an immovable anchorage point for the buckle as far down beside the occupant's hip, so it could hold the body properly during a collision. It was just a matter of finding a solution that was simple, effective and could be put on conveniently with one hand.

Is fuel efficiency really what we need most desperately? I say that what we really need is a car that can be shot when it breaks down.

It devolves upon the United States to help motorize the world.

The only similarity between the car and the human body is that if something is seriously wrong with the design of the former you can send it back to its maker.

The pilots I worked with in the aerospace industry were willing to put on almost anything to keep them safe in case of a crash, but regular people in cars don't want to be uncomfortable even for a minute.