I don't think the government should be getting involved with the private business sector, if people want to drive 15 mpg SUV's then let them. With the increase in gas prices you'll see a drop in these types of vehicles and a higher demand for smaller, more fuel efficient cars. Auto makers will produce what's in demand because they want to make money. If we let the government control what our cars should be doing, then what else can they start controlling? America is supposed to be a democracy and is supposed to be capitalist, but sometimes I wonder...oh and this is only for America, I don't know enough about other countries to speak for them.