I had a run on the demonstration rig at the Highland Show in the early 60,s,after a period of going back and forward over the steel frame the driver said he would have to stop to let the gearbox cool down.I also remember Land Rover football in the main arena,2 or 3 motors in each side and a ball about 6ft high,there was a mishap when 2 motors collided head on taking out each others front drivers side wings.