On the Plus account, I took the LM55 VGT (Gr.1) to the VGT menu book and started destroying the competition after finding out my tunes hadn't been saved. At Interlagos, I won by 17 seconds in a time of 10:10, while lapping the Suzuki on lap 6. At Deep Forest, it was a 12-second win in 9:37, again lapping the Suzuki on Lap 6. At Kyoto, I won by 28 seconds in a time of 10:07, while lapping the Suzuki, the Infiniti, and non-racing Mercedes (the latter 2 weren't in the previous races) on lap 6.
The 3-star marathon roulette was an insulting Height-Adjustable Sports Suspension for the BMW M4 Safety Car, while the 6-star was the Alpine Alpine VGT Race. It was a good thing I didn't buy it, especially since the only tuning parts available are tires (but not dirt), ballast, a power restrictor and a hydraulic handbrake.
On the GTP account, I took a stock BRZ GT300 to Sardegna and did a 1-stop race (FM5 for the first 7 laps, FM3 the rest of the race, pit lap 8) to near-perfection, taking a 9-second win in 26:59 while lapping the 2 back-markers. I don't know if an alien can do it on hard, but that was on normal difficulty (as usual).
Or at least that was before the freeze at the end-of-race summary. After a game restart, I don't know if I got the money as I don't keep very close tabs of the money on that account, but I did get the 4-star marathon roulette, and the mileage accumulated on the BRZ. Of course, it was the low-cash/lowest-possible 10,000 Cr.