Check out the 10 smallest cars in the world.  Aren't they cute?  I want to pick them up and play with them!  Today's economic and environmental concerns have been big players in pushing the development of smaller vehicles.  For obvious reasons, they are much more popular in densely populated urban areas where driving is limited, but they don't make a lot of sense for the more dominant long distance travel of most sprawling American cities.  I've seen one in real life.  I'm convinced that it is the only one in the Dallas/Ft. Worth metroplex.