We went out to the stock car/motocross track yesterday, and Bullet was his normal, super-energetic self, so I decided to run him next to our Rzr S (side-by-side) on the stock car track, and it wore him out! He could run 35 mph in the first burst of speed, and ran a steady 20-25 after that. He's still tired this morning! (SCORE!!) Here's the short video I took while we were cruising along...