I used to work as a backcounty Ranger during summers in the Sierras way back. One of my jobs was to inspect peoples campsites, and to check if they were using bear canisters. Bear canisters are mandatory for backpackers and I thought that if they made a bigger one, it would work great for car campers to store food in one. The problem is where you keep your food container. Doesnt make sense to store your food in your camper in bear country. I suggest, always using a food locker when one is available. Just throw your cooler in. If one is not available, then I would not stray too far from your camper and always keep your camp clean.
I have seen people use small drums that require a screw driver to remove the lid, guides in AK use them, but they are not too practical for car camping. The Yeti coolers look like a good product, but way too expensive. We need a good bear container that is practical for car campers.
Stories? How about waking up in your tent with a bear on your doorstep. Not sure who was more scared, but that Black bear jumped when I rolled out of my sleeping bag.