Peter Gabriel "Signal to Noise" is great for making passengers say "What the #@@!?" when a journey starts to get tedious. In fact, a lot of PG's records seem do that to people for some reason.
Tom Petty "Running Down a Dream" helps you break the speed limit with aplomb. As does "Don't Stop Me Now" by Queen.
I also have a penchant for a bit of Devo, but only when I feel like giving the engine a good thrashing!
Layla, IMHO, is arguably the most dangerous track for inducing air guitar at the wheel, while The Doors or Booker T & The Mgs (particularly Green Onions) are both great for a bit of dashboard keyboard/piano.
Actually, like Allan I mostly listen to Queen in the car. "I'm in Love with My Car" is especially good at the traffic lights with the windows rolled down. Has scared many a Burberry clad, Fiesta driving Chav in recent years.
Perhaps people should also post what "air" instruments they play at the wheel? Guitar, drums, piano and sax are all within my repertoire, although I know I shouldn't
