It might be easier in 3d- strict tests for licenses and different levels (speed limits) for different levels of driver. Tractors, trucks, buses, get their own areas. Bicyclists stay on the ground, never to disrupt or be threatened by anyone again. Motorcyclists get their own ribbons with lots of curves. Race car people that pass that level get theirs too.
It might be easier in 3d- strict tests for licenses and different levels (speed limits) for different levels of driver. Tractors, trucks, buses, get their own areas. Bicyclists stay on the ground, never to disrupt or be threatened by anyone again. Motorcyclists get their own ribbons with lots of curves. Race car people that pass that level get theirs too.