Ummm several years ago me and 2 older lady friends of mine went to a movie. We parked in a parking garage, got out, locked the car and went to see the movie. Came back to the car AFTER watching an entire movie to find we'd left the LOCKED car running the whole time. We had to call a tow-truck to come open the car for us...and live down the stupidity! Our only excuse was we were busy talking and the parking garage was loud enough you couldn't hear the engine...sigh...