I found this graphic showing US oil usage by sector..
http://www.eia.doe.gov/pub/oil_gas/petroleum/analysis_publications/oil_market_basics/Dem_image_US_cons_sector.htm interesting to note how transportation usage has exploded while industrial usage has grown but much more moderately. Thank you, SUV drivers and manufacturers for further exacerbating the problem!
Personally I think people who drive cars that get less than 25MPG as commuter vehicles ought to be ashamed of themselves.
Of course our government isn't helping things too much, either. I guess we'll have to leave it to economics to finally get people to change their attitudes about the cars they drive and the kind of economic/environmental/political effect it has.