We should adopt the European model of cars. In Europe, they drive mostly diesel cars, and it is a rarity to see a gasoline car. I can remember when the American brands were large cars, and then in 1977, the American automobile manufacturers decided to start downsizing the automobiles that they made. This continued for about another 20 years when SUVs started to become the latest rage of automobile design. The European and Asian automobile manufacturers were continuing to build smaller cars until the last 5 or 6 years. Today all the small Asian and European cars are getting larger. A good example of this is the VW, Hyundai, and Kia, just to name a few. For the most part, all these manufacturers make cars exclusively for the North American market with internal combustion engines and produce almost exclusively diesel cars for their domestic markets. There are more gallons of diesel out of a barrel of crude oil than there is gasoline. In the US we lace our gasoline with ethanol which only benefits the farmers who produce the corn to make the ethanol. That corn would be better being used to feed the rest of the world than to be burned in an internal combustion engine.