A frame of a desert hunt scene.
It's way more difficult than I expected. So the camera was animated, the vehicles that follow each other as well, and everything was OK. I created a GI cache file for the scene (5 frames sequence step) and rendered a test animation using 5 cache files per frame.
The result looked totally crappy! GI flickering on the objects like hell, probably due to the fast motions of the vehicles, and the motion blur blurred not only the landscape which it should do, but also the objects at the same amount, although they weren't moving that fast in relation to the camera.
So I rendered out the scene with objects made invisible, so that they cast shadows on the terrain. And then I started to create a GI cache file for the objects with GI sample quality of 5 with a sequence step of 2 (Motion blur disabled). I'll see if I get some decent results by using some more files to blend per frame than usual. In the end I'll have to render out a mask sequence for the objects to comp all the stuff together. Thus I'll have the chance to create some motion blur for the objects in PW that hopefully fits well to the TG MB of the terrain. I hope my plan will work.
