I was once camped next to a family who pulled up in a car and proceded to set up a tent, table, picnic shelter, etc. They kept walking back to the car, beeping it unlocked (it was all of maybe 30 feet from the tent), getting something out and beeping it locked. Went on for a long time.
But that was better than the people who pull up, open all four doors and turn on the musik blaster...
We once camped next to a deaf family who kept forgetting to shut their truck door (with the keys in the ignition)