I think adding the ability to track specific AI vehicles on the map or in the world somehow would make for a lot of interesting single player scenarios such as chase and tag maps. It could be done in a way where the player can keep up with the location of several AI vehicles in a car hunt style or even on big track racing. As far as I'm aware, nothing like this currently exists, but would make for a lot of creative development by the community.
Well, there’s a demo derby ai in this mod, https://www.beamng.com/resources/destruction-derby-1995.24289/, but idk of any others. This is a good idea, though.
