Small furry creature

..or maybe discovered a design flaw in nissan cars.. turned on the engine and closed the car door, to keep the car warm while scraping frost off the windscreen and got locked out.. with my house keys, bag and phone in the car. Didn't think this was possible. Several hours later and slightly blue from frostbite, a man from nissan turned up with a skeleton key. Seems ice can get down into the lock and somehow short circuit the system and lock the car. Have a more interesting theory.. little green men with remote controls.
http://www.koalaexpress.com.au/blinky.htm
(save the wombat)
http://serf.org/wombats.html