Behind the Wheel is one of DM's best songs, and all the remixes here are fantastic. I'm particularly fond of the Shep Pettibone mix, because of how stripped (no pun intended) Dave Gahan's vocals are on that one. His voice sounds very soft and pure, which makes the song that much more beautiful.
While Route 66 is not my favorite song, I thought it was an interesting addition, and the remixes are pretty good (for that, I think the Beatmasters mix really stands out).
All in all, this is a great single, and would make an excellent addition to anyone's Depeche Mode collection.