I have video courtesy of Team 1038 of a rampless 48 driving straight out full speed during a practice match against 1038 in Pittsburgh. It was our driver's first practice match of the season. He proceeds to trap a ringer between 1038 and us, drive up the ringer, try to do a barrel roll/pirouette, and lands upside down. Of course, we just flip the bot over after the match and go on our merry way. There's a youtube link here.
I'll have to dig up the raw video.
http://youtube.com/watch?v=CjHMb55EXmY