I can't believe anyone really thinks ANYTHING THE US DOES, WILL MATTER AT ALL. Look at the 3rd/2nd world countries, India, specifically, but China, Brazil, Tawian, Korea, etc as well. Look at what they are doing. Watch Slumdog Millionare and notice all of the pollution.
Honestly, if everyone is the US got rid of their cars, and powered their homes by solar energy, I doubt it would change anything at all.
So please, forcing auto manufactures to acheive some unrealistic brand "MPG" and coercing everyone into buying CFL bulbs.... Spare us...
Rant over...