This is a pretty straightforward Challenge. Just go to any Race on the map (Sprint, Circut, Street Race, etc.) and come in first place.
If you are in the middle of a Championship, winning any race during the Championship will still count towards the Challenge.
You can do this online but with Single Player, you could change the Drivatar difficulty down to Very Easy if you need that extra help.
ENJOY YOUR 2017 BENTLY CONTINENTAL SUPERSPORTS!!!