Did they break up at a party? Was she drunk for large portions of the film, at least? Damn it, I'm going to have to watch it again, aren't I?

You aren't missing anything. It's basically a almost G-rated version of your classic teen film in which a kid fails his driving test the afternoon before his date with the best looking girl at school. Instead of losing out on his one chance to score, he steals his grandpa's convertible Caddy and hilarity ensues. It's probably been twenty years or more since I've seen it, but I believe it turns out that he learns that the girl was shallow and vapid and not worth all the trouble (but could be–and likely am–wrong).

Both of the "Coreys" always annoyed the hell out of me. I think my sister had a crush on this one, though.

I was always a fan of "License to Drive" with Feldman and Heather Graham. . . okay, that's a lie.