Yeah I would have left it on the start box but it tends to get it oily. As well when I set it in the grass it kinda muffles the tone so I dont bother the neighbors as much. But I made sure the wheels werent turning at all before setting it in the grass. At the end of the video the car was running out of gas so you could hear it getting ready to take off so I let of throttle and shut it down to refuel.
Best way to break in motors.