Does friction not work on rotating objects or do we need to do something more complex than I am aware of?
I can see that the Vehicle Demo works fine (and I imagine the wheels are taking friction in consideration to rotate, but it appears to be a custom module for the vehicle).
A simple example:
The above image has some rotating Round-Blocks - They appear like they rotate alright (and the collision geometry seems to do so too). I set the friction on both board and blocks via Physics Material (and upon testing on a slope they seem to be working as expected).
But if I let the board fall on these rotating blocks, the board does not move at all. Am I missing anything?