Yes, it prevents you from setting the parking brake if your seatbelt is off, as you shouldn't exit the car while it's still on. I'll double-check, as I might be mistaken, but it has lots of nice little behaviours that show that the manufacturer really thought about the edge cases.
> Yes, it prevents you from setting the parking brake if your seatbelt is off, as you shouldn't exit the car while it's still on.
This sentence is confusing but doesn't seem to make sense either way it can be read. What is the antecedent of "it's" in "while it's still on"? The parking brake or the seat belt?
Why should you not exit the car when the parking brake is set? Alternatively, how could you exit the car while your seat belt is still on?
The car, sorry. You're meant to turn it off before exiting. That said, I just tried it, and I was wrong, so it was some other thoughtful thing that I noticed. I remember thinking "that's really smart, it's so you can't exit the car while it's still on", but don't remember exactly what it was.