Thanks, Jahn P., for your post. I've put it in a new thread in usual form, day by day (for Zermalmer's Challenge Overview).
Goal 1: Daytona Oval, 1-lap cup, running start, no opponents, just finish
Goal 2: Daytona Road Course, 2-lap cup, running start, reach top speed of 200 mph / 321.86 kph four times, win
Goal 3: Daytona Road Course, 3-lap cup, running start, win, race is finished as soon as you overtake "Martinez" (blue Agera R).
Recommended PR: 82.1
Skip: 10 GC each
Rewards: 5 GC