To make it as fast and easy as possible, i would use a fast AWD Nissan that is in the top of its class tier (A, S1, S2 ect).
You can do this challenge in just a few minutes. Just pick 3 small circuit races, and 1 lap each. Remember by default they are 3 laps each!
If you crash hard then use rewind or restart if its off, since you have to WIN it.
Heres me doing it with a Lambo. Just pick a Nissan in this case. The rest of it is the same: