There's a guy just outside of Birmingham who does a similar rountine with a Cub. He's flown airshows all over, OSH too I believe, and part of his act is landing on top of a truck going down the runway. He has his own grass strip airport and teaches upset recovery, acrobatics, well just about anything really. He also has lodging for his courses.
gkairshows.com has his act and the courses he offers. Cool guy.