Well, if it's mandatory on new cars, then kind of everybody knows its there, and then there's the fun of not realizing it's not there on older cars. While it's optional, it might be nice if they had a notice on the dash that it's enabled.
On the seatbelt locking, I learned the why when installing car seats, which seems reasonable, because that's what it's for.
On the seatbelt locking, I learned the why when installing car seats, which seems reasonable, because that's what it's for.