Storm: if anything it'll be a deterent to carjackers.
LOL. You'd have to be a total idiot to car jack anything more than an Accord.
Having a decent luxury saloon or suv might be a deterrent itself. I have heard family members losing a Cutlus, but not a single problem from the families who own a 7 Series or Grand Cherokee. Seems like amateur crooks stick to cellphones or domestics. Wouldn't want to steal the wrong persons car.