Hm - drilling in Anwar by 2020: 680,000 barrels of oil a day
Barrels saved if *everyone* adjusted their tire pressure: Around 800,000 barrels a day *now*.
Looks like even political blogs are weighing in, and saying that "Yeah, just pressuring your tires isn't enough - but it's a damn good start":
Do You Have the Energy For This? - Swampland - TIME