The car looks to be an old Volvo station wagon -- so everything would have been in plain sight in the wayback. The pressure cooker and propane tank were supposed to be for a food truck. (Based on the available information, I'd suspect that Israel Shimeles might own a food truck and that DC suspended his driver's license because of unpaid parking tickets. But that's just my wild guess.)
Orothdox Jews use cookers on their Sabbath.