We rented a Ford Explorer to go on vacation last week. We visited an antique shop, but I lingered in the back seat a few minutes to take a capsule and drink some water. Found I couldn't get out; I was locked in and couldn't unlock my door. (We had de-activated the child locks, so that wasn't it.)

I pounded on my window till somebody noticed me, and the guy with the keys released me. What if the car had been on fire or was sinking in water?