Private lobby customization ?

Is there any information on customizable private lobby’s. For example, being able to have a race with only all-wheel-drive cars, or being able to select each individual car for the AI. Any info on this ? Why would they remove something like this in the first place ?

Well they ain’t going to be Custom public lobbies…

https://forums.forza.net/turn10_postst99662_Custom-Public-Lobbies-and-You--A-Primer.aspx

He’s talking about private lobbies. Most of those options “should” be there. Picking individual cars for the AI I’m not sure.