I don't recall details, but I just did it in one go, used a free Engineer on 4th race (of 5).
Some tricky challenges, and some fast, rough, all-out racing. Pretty easy with all R$ upgrades plus 2 gold upgrades, brakes, tires.
Sat, 2016-02-20 09:15
#1
Daytona 500 - Day 6
