Hopefully this could be a very important thread for all of us, who only miss a few of the GC-cars, like I do. I have 240 GC but I need a lot more (~2000) to get the GC-Porsche RSR, the GC-Ferrari,  the GC-Pagani and the GC-Koeniggsegg.

After my first real long Dodge 69 Charger endurance (I stopped at 870km), I was very disappointed. It took me about 3 1/2 hours to raise 3 levels with the 100% Bonus and the manager. Which means 3 1/2 hors for only 8 GC, 9GC minus 1 GC for the manager.

Are there any better ways to make GC?

69/73, Level 188, 104% finished