and it's really hard to find just what you want that someone's already made. Especially people.
That's because they are copyrighted. Create or buy your own game objects.If it's for a hobby, then polished graphics aren't a big deal. If it's for a business venture, then purchasing quality graphics is an investment.
For a racing game (F-Zero) would you just use waypoints for the AI?
Yeah, I suppose. You might have to differentiate between waypoints that are part of a curve as opposed to ones that are part of a straight-away.