That's conservatism.
Oh, if only life were so simple as that. You say gov't should have no say in the public's purchasing decisions where oil consumption is concerned. Do you believe that's the way it should be with every other resource having national security implications, as well?
You must be too young to remember the OPEC oil embargo. Maybe you haven't yet noticed how much of our economy runs on oil. Maybe you think the reason for the Persian Gulf War was to free the oppressed people of Kuwait.
As biblewonk said previously, oil is a strategic resource -- every bit as much as steel, uranium, ordnance, or military personnel. Ever heard of the Strategic Petroleum Reserve? Oh, I suppose to be a "real" conservative, one has to let the "free market economy" determine the availability of oil, the size of the military, the number of aircraft carriers, and our foreign policy response to North Korea.
Yeah, go ahead and "drive large," my fine, self-proclaimed conservative friends. Keep the terrorists swimming in US$.