All well and true (sadly) but that only gains them entry to the vehicle without the alarm going off. It doesn't allow them to drive the car off, without somehow fooling the system into thinking the correct key is being used.

All in all, it seems a lot of effort to go to. A Polo is hardly a hugely desirable vehicle, all things considered! (Not being unkind - I have a '00 model myself!) Given the stuff in the car, I guess if they knew about it (and the ICE kit was expensive) it might have been sufficient reason for them to break into it, but I would have just expected them to load what they could get into their own vehicle.

I can't get over how odd it is that such an apparently large amount of planning went into the theft. You don't ever carry things of greater value, do you?