As awesome as that would be sadly NEVER gonna happen maybe when we had a full development team and before the dream of an open world map was given the "Emperors Mercy' but now? More likely that old Corpsie the Emperor will get off the Golden Toilet and dance the Jitter Bug
With the current Ork vehicle physics or without? The trukks would flip off the track on the first turn, and the tanks would end up starting the course facing the wrong direction.
I'd love it if we could put some bling on our trukks. We've already got Initial D drifting. That feel when you gotta drive your trukk to the LSM Rhino pronto just so you can hop out right beside it and hit it with your power klaw before driving away.