If I was not 6'3 and 210lbs I would consider trying some of those moves in my chair, but the ground is WAY too far away from me to take risks like that.
When I am not racing and at the track with friends I will run and grab their timeslips and then grab a hold of their door and have them tow me back to the parking spots.
This year at the Indy race I forgot my handicapped permit in my wifes car so we parked at the gates and a guy in a cart towed me from the front gates all the way to the crippled section. It was fun as hell as he maxed out his little cart and we were flying right by people...just had to watch for pot holes as the chair stays and I keep going 25mph.