So, new version of Road Atlanta including something really missing in all external tracks : reiza road feeling.
This version includes all the previous things (roadshaders, skies, etc).
I am really happy to propose this to you. Sliding cars like vee or 911 are really modified by the "flying carpet" effect of non-reiza track. Now it is corrected.
Thanks to Alex Sawczuk for usefull tips about 3DSmax.