Replying to Anyone ever been camping in Moab, UT?

Me and a friend are driving from CO to Moab for 5 days. We plan on camping or sleeping in the car. Neither of us have been and we don't really have a plan on what were going to do.

So what are some things we can do. I want to mountain bike, hike, maybe rafting, but I really care or have a plan. What are some things to do that are popular and what are some of the unknown but awesome things to do? Where should we stay/camp? What do we need to bring?

Any suggestions?