the primary purpose behind the government's passage of the credits is to decrease emissions .... the auto industry's purpose is to make as big of a profit as possible .... if they could meet the standards while producing large numbers of vehicles the general public wants to buy, there would be no need for the government to impose a penalty .... for the industry, purchasing the credits has proven to be cheaper (meaning they make more profit) than it has been to expend the resources to quickly move to alternative fuel/electric vehicles and the industry doesn't much care where they can buy the cheaper credits .... if the market was there for them to make sufficient profit by developing and selling alternative fuel/electric vehicles, they would move in that direction without pressure from the government .... the reality is, at this point, a market of that size simply doesn't exist .... if high mileage three wheelers prove to be a big seller, the big outfits will most certainly try to move into that market and my bet is they will try to change the credits to where those trikes qualify for the credits so as to help out their larger more profitable vehicles