Door problems of the 2011 BMW 328

Accident happened in los angeles. I was heading east on 3rd street ( main road) 2 lanes, I was on the right lane. Opposite side also has 2 lanes going west. Westmoreland is an intersection on 3rd street and has the stop sign. The vechile crossed 3 lanes of traffic and hit my car on the drive side rear wheel and quarter panel. At the time of impact, the momentum had me going almost sideways onto oncoming traffic. And my biggest concern was, the 2 passenger side doors flung open. Everyone had their seatbelts on. My wif'e's shoulder bag which was tucked on the floor on the front passenger ended up in the middle of the road on 3rd westmoreland. The car was disable and can't be driven because the rear wheel was bent. I have reported it to my insurance company and told the BMW authorized repair shop. I am not sure if the doors where designed to open during a collision but inquiries to BMW customer relations and dealership has gotten nowhere. I am concerned that when the car is fixed, I maybe driving a car that has a safety defect.