There is a TV commercial with a guy driving a car and a snazzy instrumental song playing with the only words heard being "how long?" what is the name of this song?

Are you talking about the State Farm commercial with the asian guy driving in a car? Because that song is "Point of No Return" by Kansas. Here's a video with that song. Hope this helps. :)

YouTube - kansas Point of know return (http://www.youtube.com/watch?v=60A1yKc2hi4)