NHTSA complaint: 2019 MERCEDES-BENZ SPRINTER 3500 — SERVICE BRAKES
It appears that driver pressed park and pulled the emergency brake. Its possible it wasn't pressed properly and dealer found no mechanical fault. Vehicle rolled forward and impacted another parked vehicle. This may be related to other issues at RemarkableFoods related to transmission being in "Park" or driver intending to put it in "Park". Video is available for review.
National Highway Traffic Safety Administration — Office of Defects Investigation