Im at a parelli related barn, so idk if they would know anything about the driving your talking about.. I have taught Chance to drive, SO if I could see a video I could learn how to do it myself :) Im looking at all my options and right now I want to try what spyder suggested with the 2 lunge lines. But what you are suggesting would be fun to try!
But a week ago we were just doing the parelli games etc and she's use to being lazy and not moving forward cause it wasnt part of the 'program' so this is the best she's been since we dropped it. She's not use to useing those muscles so im gradually going to keep asking for more forward movement so she doesnt get sore quickly. But seeing that everyone is just suggesting normal side reins I might ask my BO if she has any around.. I know she has elastic reins.. o.O not that it matters lol
And its not the lunging system. It is similar just has no back pully thing. Lol! Love my descriptions :P