I wonder where this is because I cant seem to find it skipping through all the camera positions. Every time I watch a video for a new track with mostly Tom Coronel its being shown from the rooftop cam, i'd like to see my replays like that as well
When in replay mode (and even while driving ^^), you can use the free cam to move the camera where you want. Look in the game options and bind keys for Free Cam, moving it and zooming it (there's more...). Each time you press Free Cam key, it swaps between 3 modes if I remember good. Some are car dependent and one is immobile cam not related to car, and it can also change the sound (interior or exterior).
I don't know if there is a text file defining fixed cameras values for replays, if yes it would be interesting to edit it. I've read somewhere on the forum that it exists for driving cameras, maybe it's the same... Otherwise you have to set it manually for every replay.