Same deal as with my Blackwood optimisation, new AI borders via http://www.racedepartment.com/threads/ai-line-helper.137572/
Probably still not ideal (I almost lost control of my recording vehicle (Abarth 595) on a kerb , but at 10 minutes per side I did not want to redo everything)
Biggest difference that you won't see in this pic is that I recorded Hunaudières a whole Abarth width wider per side, so that the AI can now overtake like it happens in the real race, with LMPs shooting by on the hard shoulder. No change to the fast_lane itself
Just copy the "circuit_de_la_sarthe" folder in the zip into your content/tracks folder, and overwrite when prompted.