THE VEHICLE WAS TURNED OFF AND IN PARK. THE BRAKE WAS ENGAGED. IT ROLLED BACKWARDS DOWN A HILL ON TOP OF SOMEONE'S CAR AND COULD HAVE KILLED SOMEONE. UPONE MORE INSPECTION, IT WAS DETERMINED THAT THE MERCEDES 2019 SPRINTERS ARE MADE WITH FAULTY PARKING PRAWLS INSTALLED IN THEM NOT FIT TO HOLD A LARGE DELIVERY VEHICLE LIKE THE ONES THEY MANUFACTURE FOR AMAZON. THIS IS MY SECOND AMAZON BRANDED MERCEDES SPRINTER ACCIDENT ON DIFFERENT VEHICLES, WITH THE SAME EXACT FAULTY BRAKE OPERATING SYSTEM, THAT HAS HAPPENED IN SIX MONTHS. BEWARE OF 2019 AND 2020 BRAKE SYSTEMS INSTALLED ON MERCEDES SPRINTERS.