A corollary to "Lead us not into temptation" is "Lead others not into temptation." I NEVER leave instruments in the car, even covered with a blanket (a sure sign that you're hiding something worth steeling.) They're always in the trunk. If I can't fit everything in the trunk, I put stuff in the car that wouldn't be a major loss (my cassettes, for example) or clothes.

Then, I knew someone who had an expensive guitar with a badly warped neck that he repeatedly left in plain view when he parked his car in New York City, hoping someone would steal it, as he had it insured. No luck. Where are bad people when you need them? :-)

Jerry