Kind of like a mini train....
We have the technology but whos benefiting from it?.... no one. Why couldn't I buy a diesel car in the U.S. from '05 to '09? Hmmm, maybe because for the last 40 years those little bastards have been capable of getting around 50mpg's. I belive GM and Ford do have little 2.something litre's in the car's over seas, but I am to lazy to look it up. If there was a car that ran of H2O it would never go into production, atleast not right away. Think about if you invented an engine that ran off of a reusable non-polluted source, or maybe something other than oil. Something that can't really be profitted off of (water, air). You would be rich, not from your invention but from your payoffs. Uncle Sam and the oil companies would pay to keep or mouth shut. The government currently taxes by the gallon of fuel that is sold to you... Do you really think they want you to be getting good mpg's, or as good as you could be? And when we get the bleeding to stop, they'll just chop off our leg. Taxation on mile driven is yet to come, but closer than you'd think.