You realize that very few cars have the belts attached to the seats, right?

The Intrepid seats he is using only have the belt buckle attached to the seat. The retractor is attached to the car. If his seat breaks free it will simply spin around backwards and spit him out. A big lot of good that will do him.

The other thing to consider is that the belt he uses may not be 100% compatible with the buckle. It might click but will it fit properly?

We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon