Occasionally, when carrying lots of bags/boxes, I can't lock the car when I park on the drive, and do it when I get inside (press the keyfob).
Presumably there must have been times when I have forgotten. However, back in March I went to go out, and found that someone had been into the car and stolen the sat nav. Only that. It left me wondering if there were gangs roaming the street looking for unlocked cars, or if someone had clocked that I hadn't locked the car. Since we live in a cul de sac it seems a bit far fetched.
Going OT, amazingly enough I had a call from the local nick last week - they had recovered the Sat Nav ! All the more amazing, since I hadn't bothered to report it !!!! Turns out they consulted the manufacturers database which did list it as stolen (to prevent the scrotes trying to remove the Garmin Lock). All they would tell me is they had arrested a local youth and a search of his premises revealed a crateful of SatNavs, the only one of which they could show was stolen was mine.