Some songs I did not see mentioned on this thread so far;
The Corvette Song - George Jones
Cadillac Baby - Colin James and the Little Big Band (excellent Canadian CD similar to the Brian Setzer Orchestra).
Smokin' 'N Burnin' - Brian Setzer, Nitro Burnin' Funny Daddy CD (you should see the wild hot rod on the cover of this. Brian Setzer was the lead singer/guitarist/songwriter for the Stray Cats).
Someone mentioned Lonestar's song with the lyrics '700 dollars is a heck of a deal for a 400 horsepower jukebox on wheels...' The song is called 'What About Now'.
There is also a new band fronted by Jason McCoy called 'The Road Hammers' that have a great self-titled CD that is all driving/trucker tunes. Some original and some remakes of stuff like 'Girl on a Billboard', perfect for listening to while driving. The music is country with a heavy southern rock influence.
If you look in any copy of Old Skool Rodz you will see in their music section reviews of obscure Rockabilly bands that have all sorts of hot rod songs on their CDs, if you like that kind of music and want to find something other than The Stray Cats and early Elvis and Buddy to listen to.