Well that was my first reaction when they blocked me with the van. I'd seen there was at least two of them and that they were both twice my size so I was thinking about what I had in the car to hit them with. Unfortunately as i've only had it about 3 weeks I've not had chance to accumulate much in it yet so there wasn't anything, not even the dog!!
But when I saw the reverse lights come on and them start reversing towards my front end I was more concerned about them not damaging the car. Thats when I moved towards driving down the inside of them, but they then drove diagonally forward from their central road position to block that exit route. Luckily that left me enough space in front to go round the outside of them and blast along the wrong side of the road clear the traffic and get away.
Whilst I can see the merits in the immobiliser you mention, my concern would be in a break in situation, the group would then come back into the house, this time really pi**ed off and batter you or threaten your family until you tell them how to start it. In reality if they've got in your house, aren't you just going to be wanting to get them away from you and your family as quickly as possible, thats where the car insurance comes in to play.
