This is a fabulous image of one of the rarest cars that anyone is likely to see. It is a teeny car with tiny wheels and it says on the side ‘almost greener than walking’. It is assumed that it is energy efficient and the fact that it has very few materials to make it and it wold be very light then it would not take much fuel. There would also not be much room for a fuel tank in such a small vehicle which may explain why the picture shows someone pulling it along. Check out the faces of the passers-by!