Well, the conversion costs money and business passes all costs including taxes on to the consumer. So, I guess voting for environmentalists who changed the regulations on gasoline costs us money.
Just remember, the oil companies get about 4 cents per gallon in profit, the feds get 18 cents and Colorado gets 22 cents so the government makes 10 times as much on a gallon of gas as the company that recovers, processes, and delivers that gallon. Who is ripping us off, the oil company or the goddamn government?