Instapundit has a good post up about SUVs that makes a point I hadn't previously considered. Modern requirements for child safety seats, and the inability of children to sit in the front seat because of passenger side air bags have probably made SUVs dramatically more popular for many families, especially if you have more than 2 kids. I don't believe in demonizing anyone's consumption choices regardless off whether or not there is a good reason for those expenditures. The pursuit of happiness and all of that. We all spend money (which relates pretty closely to energy, and hence oil) in tons of foolish and inefficient ways. If it makes you happy, do it. Now, a seperate issue of course is making sure that any effects of one's consumption are properly translated economically, and one can make a decent arguement that gasoline consumption is not properly accounted for. However, if that is the case, it should be an increased tax on gas, rather than any specific penalties to SUVs. Using 20 gallons in a Prius is just as bad as using 20 gallons in an Explorer.