Best thing my Chief did was put one of those steering column switches in that disable the column. It has really cut down on our worries.
I am a bonehead...
Last weekend, went to a domestic out in the middle of nowhere. The female party was actually the primary physical aggressor, so I arrested her. Locked her in the car, and then locked my keys in the car...doh! I have spare keys to my cruiser, but that day I happened to be driving the barracks spare cruiser, because mine was at headquarters... 
