@Melonlity -- Settle down a bit. I do agree that we will have something in the future, but the cyclone engine may or may not be it. We have heard similar claims about electric engines and hydrogen engines, too, and the technology for those is still being developed.
In the meantime, we have some incredibly efficient gasoline engines that are powering our vehicles (such as motors that generate over 300 horsepower yet get 30 miles per gallon on the Interstate).
The point is we still have a long way to go to developing the next generation of engines and (hopefully) weaning ourselves off fossil fuels, but we do have some things to tide us over until the next, big thing is found.