Back to serious things: it's time that the adults of this forum take back the steering wheel from the children.
Questions raised on this thread that deserve some attention from OM:
1. blending of 3D objects into the landscape (namely trees)
2. size of country roads
3. hedges
4. railroad bridges / tunnels / trenches
......
1001. Size of pilot
You are free to fill in the empty places from 4 to 1000, of course.
Cheers!
Insuber