Going to try and finish some endurance races and get some XP before GT6 arrives. Using GT-R GT500 Stealth, good for relaxed 1:58s and eight seconds quicker than AI, but stopping after 17 laps and Bob does 20? Car uses about 60 litres or 1/2 tank for that stint. Even if your car was only a 2:06 and only 1 sec faster after 172 laps would be 3 minutes ahead, on the other hand 1 sec slower would leave you 3 minutes back. So for 6 hour effort may as well keep an " unfair advantage" and get 'er done. After all Audi doesn't slow down for Toyota.
In the wet Suzuka the AI seems to be in the mid-high 2:30s whereas a 2:20 is fairly easy, so the advantage is 15-20 secs per lap.
Done!, 5:59.45 and just pipped an Arta NSX for a 7th lap ahead at the last chicane. Bright sun all day, it never moves from the end of the back straight. And 1,300,000 xp but still 2 mil to go.