A buddy of mine got something like this after he lost his brand-new Impreza. It’s on his even newer Impreza. It’s all done through his cellphone - he can lock the doors and disable the engine at any time - including while someone’s driving - and also talk to the perps through the car stereo. He tells me he’s quite hoping someone steals his car now so he can use it. So far all he’s done is freak the hell out of his girlfriend when she was driving it.