DXVK is actually coming from Linux (it is DX9 implementation via Vulkan). But to my surprise, on my hardware it runs better than DX9 on Windows (which is very counterintuitive, as most other wrappers/layers are slower than the native thing). And, it is open source, so I can change it. I created a separate GTR2 specific fork, where I change it to Enhance GTR2 beyond what is possible in DX9, and I will keep adding/changing things as I learn more.

I suspect those old games would run on Wine just fine, but what about steering wheel, pedals, shifters, controllers, Crew Chief, motion stuff, transducers? How to make all that work on Linux, is that possible? (just curious).