Either that or grind. A lot.
QUOTE]
B-Spec Spa 5 times for each car,
level 0 Bob on sports softs, if he doesn't win straightaway will get to win without much coaching in his 2nd race. Its even easier if you wait till moisture drops to 20% as the AI will pit twice, and on SS Bob won't even try to pit.
Better yet: Lamborghini NOMAD Diablo at Spa. No aero, Racing intermediates, cancel all pit requests (if any). Faster and much, much easier - my level 34 bob can complete it without having to watch over him the whole race. With the 200% bonus, 4mil Cr. at 20min: 20*5=100min; Le Sarth at 200%, 6mil at 40min: 40*4=160min. Both assuming you're dry on credits.
Most fool-proof way: finding the highest paying seasonal at cr/min and grind the 🤬 out of it. Long and boring, but at least you don't rely on Go-Slo-Bob.