Is this a trick question? Shocks don't hold the car up. The springs do. If you remove shocks from a car at rest, the car doesn't fall down.
Wayne has an excellent point - if your IC is exactly on your resultant vector then the rear shocks don't do anything at all. The springs aren't compressing or decompressing.
That is until you hit that nasty pothole in the track and then bazoing-oing-oing-oing-oing-oing...
