I've only heard people in NJ, and everywhere else in America call it a "glove compartment" too. Except that this wasn't on an American radio station.
People in PA call it a "glovebox?" ..Hmm ..interesting. Didn't know that. It never came up in conversation when I've talked to Pennsylvanians, so I guess I wouldn't know that. Maybe I'll trick my PA band members into talking on the subject, and see which one they say.
I've not heard all my family in PA use that term....but it has been used my friend. Oh yes, it has been used. :)