Missing cars?

Hi there,

I kept waiting for the 1997 M3 to be one of the barn finds, since it wasn’t in the autoshow but I’d seen it for auction. Now I have all of the barn finds and the M3 isn’t among them. I might not have noticed except for the fact that this is one of my favorite cars in the game. Now I’m wondering what other cars I’m possibly missing. And why.

Anybody else missing cars?

Do the Street Races. Challenge drivertars in free-roam if you don’t have them unlocked yet.

Oh, that will unlock it (them?)? Thanks.