Allot of issue is in our wonderfull gas powered engines. Eventually, if we dont kill ourselves before then, we will be able to replace such outdated mechanisms altogether with much more low cost economical ones. Of course, the issue is weather or not capitalism will allow that. Now dont get me wrong, i will admit that the system had to be necessary in order to use the basic principle of trade to bring together large amounts of wealth, but we have to admit that the system is too flawed to be the all encompassing perfect method of the future. I heard there is a law in place that has put a cap on how fuel efficient cars can be allowed to be made, because not enough money is being made. This kinda has to change before we can stop polluting everything with all our noise and stupidity.