I used to live in Pittsburgh. Breaking into vehicles was sport in my neighborhood (every day more and more Section 8 housing). There were also hot break-in attempts on our block, my parents house x2. So one night, when my old Saturn's alarm went off, and my father and I appeared out the door armed.... well, the perp ran off, and the police seemed more interested to try and catch him (it had been on the news every night for 2 weeks about random car break-ins). They did not catch the guy, but our block had no more break-ins for a year and a half.
Out in my neck of the woods, my XJ gets left open, sometimes with the keys in the ignition. Never had a problem.
Unfortunately, the meth head scumbags like to target houses out here. We've had the alarm system scare them off once. Lots of soft top jeeps out here too, not seen any issues with cut up tops.
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