ROTARY KNOB DOES NOT INDICATE THAT VEHICLE IS NOT IN PARK. CAUSED EXTENSIVE DAMAGE TO VEHICLE AND GARAGE AS IT TOOK OFF AFTER EXITING TRUCK. CANNOT CONFIRM IF THE KNOB WAS ACTUALLY TURNED TO PARK. MAIN CONCERN IS WHAT COULD HAVE HAPPENED IF FAMILY MEMBERS, KIDS, WERE IN THE GARAGE. I MYSELF NARROWLY ESCAPED BEING PINNED AGAINST SECOND CAR IN GARAGE THAT ALSO GOT HIT.