First im sorry if its already know. But I just thought Id share it anyway, if there should be someone who lacks credits, and dont know how to do this. Seasonal events B spec race on SPA. Used a lvl 39 Bob. A lower lvl can also do it. Not sure how low though Car. Honda Mobil 1 NXS (JGT 01) tuned to 600 PP ( can be bought from online delaer) Tyres. Sports soft ( With these he will never try to pit) When you are at the start screen, wait until the track has dryed upto 20 % wet. ( This takes a few minutes) It takes him about 26,5 minutes to complete the race, and it gave me 4 Million credits. (With 200 % bonus) Dident have to assist him at all at any point. So can do this over, and over for about 4 mill every 30 minutes. Then after race is done just repeat the process, and you will make 8 million/hour with 200 % bonus. Or a litle less if your bonus is lower, but still lots of credits anyway.