THE US IS NOTHING COMPARED TO THE WORLD!!! Ok so "we" started the whole global warming theory, but is our impact as much as other countries. China and India are expected to double or more their gas usage in the next 20 years. The US has 300million people. India and China each have 1 billion plus, don't use much, or any, smog controls. If anyone really wants this idea to prosper, they should try to get a bit out of the rest of the world before storming the US.