Mixing cars and motorbikes surprisingly worked really well. There were wider tracks for the Landies, full of deep potholes and water-splashes, with narrow extreme tracks inbetween for the bikes. Pretty much something for everyone. When bikes caught up with the cars, they were given space to hurtle past and there was no fighting for the same paths.
If you wanted to go nuts and really test your machinery (and bottle), there was plenty of opportunity to get stuck somewhere, and several did, giving the winch experts some work. On the other hand, there was lots of terrain for off-road novices, and plenty of experienced people happy to offer advice and give demo drives.