My car was once sized because I renews it late after 6months. The police man asked me where is my car I told him outside the station and he asked me to bring it in and it was sized for 2weeks.
If you don't want it seized you can go without your car then show them the message. They will ask where is the car, if it is driveable or not (The answer is left to you) as you wish yes or no. May be if you answer no you can just pay your debt and leave.
But I assure you your car can't be seized for life.
Don't forget to hunt is on the outcome.
Best of luck.