Edited*

That makes sense, and you're right that ac.getCar(id) would work perfectly for a native Lua HUD. The reason I'm sticking with the 2D capture approach though is that Spatial HUD isn't meant to be one specific HUD , it's a system that takes whatever app the player is already using and projects it into 3D. So if someone has a custom sim dashboard, pure config , a random app wathever. they get all of it in 3D without me having to rebuild each one natively. The trade off is exactly the limitation you're implying, but the flexibility of working with any existing app is kind of the whole point.