Beautiful work. Could you have accomplished the same thing a lot easier by using a couple casters on a lever by raising the back end to take a varyimg amount of weight off the rear tires? You could even lift them all the way off the ground.
So I guess it feels a bit like driving a manual shift car as you use your feet for gas and clutch and one hand to change gear ???? Only difference being breaking is done with the hand instead of the feet ???? Correct me if I’m wrong. Sooo cool.