Given that the profit magins of oil companies is something like 10% plus or minus 3% if memory serves, it's not the oil comapines [img]/images/graemlins/smile.gif[/img]. The government makes the most off of gasoline sales and it's not even close, something like 23% of gasoline sales is taxes in the USA:
Breakdown on the Cost of Gasoline
These taxes are regressive. How come the folks including the politicians that support a windfall tax on oil company profits aren't screaming for a reduction in the taxes paid on gasoline sales?