The seats are designed to be removeable, its not as if you have to break out the spanners to strip the rear of the car. So no insurance company in the world could claim that you d done a permanent mod to the car just by taking the backseats out. Of course, if like me youve not only taken the seats out but also all the seatbelts, and fitted 4 point harness mountings into the rear seatbelt points, then maybe theyll catch on...