I believe it is a remix from an album called Verve Remixed 3 and the original artist is Sarah Vaughn and the remixer is Max Sedgley, thus the song is called Peter Gunn (Max Sedgley Remix). However, the very up-tempo portion of the tune that you sample in the commercial is just a short section towards the end of this remix. I must admit, it is extremely catchy and I hate Chevy Impalas, it drives me bonkers that this song is forever attached to that nutsty car.