Leaving car doors unlocked is SOP in urban corridors with high incidence of petty theft. I.e. don't leave attractive objects in your vehicle, and leave it unlocked so that would-be thieves can learn it themselves w/o smashing a window. The problem here being able to start the engine wirelessly, not simply getting in.
My neighborhood just got hit with a string of robberies from inside cars. Not one window was smashed; the thieves can simply use a thin piece of metal slid between the window and door to enter vehicles about as quick as someone with a key, just like what police do if you locked your key inside the car.
