Put a kill switch in it they tow it. Put a Club in it they tow it and cut off the steering wheel. Put GPS on it they throw it in a faraday cage paintshop/train. Put a Dronemobile system in it the Police just won't investigate/track it down.
Really just have to not keep property outside anymore. I used to do the "It's not a big deal, i have full coverage" but had a car stolen and they (insurance) treat you like absolute trash when it happens.
So no more outside for my cars as much as I can