I had this happen at POP . Ran over my foot while I was seated in the first row. I came up out of my seat it hurt so much. 300lbs of scooter and 375lbs of rider .
"Vehicles may begin motion at anytime" Try outrunning a test track car on the loop around the building. Also there's a about a 10" gap in the middle of the track to twist your leg in and I believe that ride is powered by 480V. Also when one person gets out others will follow