… don’t take food, don’t take children, and don’t drive a minivan.
Our observations indicate that bears entering minivans typically did so by popping open a rear side window and it seems that this was easier for minivans compared to other vehicle classes. We note that bears are strong and well equipped (long claws) to open a variety of structurally sound materials (e.g., logs and ant mounds), and we commonly saw car doors bent open, windows on all sides of the vehicle broken, and seats ripped out, all of which appeared effortless for bears.
National Parks Traveler has the details on a USDA report.