Here is the drivechain test vids, sorry about the cell phone footage, I did not have my GoPro with me.
http://www.youtube.com/watch?v=mVtCcguFhXA
http://www.youtube.com/watch?v=_PjEhxyQhOc
Very basic test, used motor/tranny from my Rock Crawler just to get an idea. Will up the motor & gearing. Also, the rear steer was flapping about back there, will have that in soon.
Oh, here is some photos of the drive chain: