I'd just like to send my apologies to you for the loss of your car. Having read all of the replies it's clear that we all hate these clowns who remove our lovely possessions that we've all worked so hard to buy (after paying tax on our earnings, then VAT on the car of course, which is more than likely what the theives dont do...)
As said by many others before me, the car can be replaced, you and your family are ok, i just hope your confidence isn't damaged at all by watching these idiots come into your home and steal from you.
Best wishes and i hope everything gets sorted with GAP.