I've got my '17 Volt set so that the doors automatically lock when I move more than 3 ft. away from the car...This has been great for the month I've had the car, but last night I was in a restaurant and went out to find the car unlocked with all the windows down. Maybe I somehow accidentally had a button pushed in my pocket on the FOB? First time this has happened and I know it's one option for letting hot air out of the vehicle before you get to it isn't it?