So cool! These are just one of the coolest things ever. I think the ultimate version would have beefed up suspension so you could move over good sized rocks, stereo cameras and a set of VR glasses (with an adjustable parallax so you could either drive a little tank or a full sized one), a set of IR sensors to detect hits and an visible/IR laser on the main gun (with an program that will simulate the reload cycle and maybe windage). A few of those in your back yard would be quite the evening.
R/C Tanks