dojj im in the tracker business, and we can supply a tracker with an aditional sensor that safely stops the car when on the go, i got a clifford and a tracker and i still sometimes feel nervous about leaving parked up!

I think if there was one thing you could do it would be to block it on somehow, if they come to toe it away then you have no chance, even if you take the battery steerrign wheel or gear stick out, so IMO the only thing yuo can do is block it in with another car and hope your other car doesnt get nicked