If you are thinking about removing the seats to get to the immobilizer, I would think that just having the seat removed would be a bit of a deterrent (try to drive a Boxster w/o a seat
)...additionally, this would also address the comment of a frustrated thief destroying the interior...they still could, but at least your seats would be safe.
I also like the idea of running a cable though the wheels, but perhaps a big chain would be more effective...not that it would work any better, but it would be more obvious, and an obvious deterrent is better than a stealthy one. I'm thinking of the line from "Doctor Strangelove" regarding the Russians having a "doomsday device" but wanted to keep it secret....
