go to online freeroam find any playground games arena. (orange square with the picture of a skull with a crown on the inside) create a blueprint, make sure it's an "Extreme Offroad car" and change the time limit to 1 min. This can also be done with
#Forzathon The Forge
#Forzathon Flag Taken, Flag Dropped
#Forzathon Crush Hour
You have to play 5 games of King, 5 games of Flag Rush.