I just saw a fascinating video clip taken from a TV show about cars. They showed the world’s smallest car, which was actually made in the fifties. It looks a lot like a toy car, one that kids drive around in their backyards. It is barely big enough for a full-sized adult to sit it in, does not go very fast, and cannot go in reverse, but it is small enough to get through narrow passageways and saves lots of energy and fuel.