This will change in time when the cost of fossil fuels skyrocket. We are at the mercy of the petrochemical companies. Like someone said before. No one imagined camera's with film would be outdated by digital camera's.
It is only a matter time, and it won't come too soon. Gasoline, and Diesel engines are inefficient and outdated. Plus they are bad for US, and The Planet.
Just look at photos of major cities around the world, when the smog is so thick, you can't breathe. How can people support this?

