4 wheel drive vehicle

I am interested in building a 4 wheel drive remote control vehicle. I am semi-comfortable with arduino and would like to use arduino in my project. What type Sparkfun equipment should I look into for motors, transmitters, receivers, motor drivers etc? Also, where might I look for building tutorials? Realizing this is an extremely broad description of what I want to do, I would appreciate any suggestions.

Go read the tutorials and forum at SoR (Society of Robots) for info on motor, drivers, etc.