Point to Point Race Track: Blender 3D Game Engine
14. Clear Parent from original road shape. Move or delete track path.
Select original road shape. Object mode.
Alt + P key >> Clear and Keep Transformation (Clear Track)
3D View menu >> Object >> Parent >> Clear Parent >>
Clear and Keep Transformation (Clear Track)
Move or delete track path
15. Join original road shape and duplicates into one object.
Select all the duplicates and the original.
Ctrl + J key >> Join selected meshes
3D View menu >> Object >> Join Objects >> Join selected meshes
16. Skin Faces/Edge-Loops. Segment
Edit mode. All verts selected.
F Key >> Make Faces >> Skin Faces/Edge - Loops >> Segment