There were a ton of Yukons, Tahoes, Explorers, and Suburbans sold from 03-06 due to huge manufacturer rebates and relatively cheap gas. Those cars are now 2-5 years old and gas has tripled in the meantime. I suspect there will be a lot of people dumping them for Cobalts, Focuses, and various hybrids. Gas will be $5/gal before it goes back to $3/gal.

2008 Galaxy Gray Honda Civic Hybrid