Agreed, and going to motor scooters instead of huge-tire pickup trucks will also help.
http://home.entouch.net/dmd/Oilcrisis.htm

I have the Vespa GTS250ie. I am very happy with it. http://www.vespaportland.com/vespa_gts250.htm

It is well-built, gets about 70 mpg if you are conservative in your driving around town, but is capable of highway speeds. Insurance is about $160/yr. The price however, has crept up about 10% since I bought mine in June.