Michigan International Speedway has always been fast, but the recent repave made the track wickedly fast, tempting drivers to the edge of danger. Not even those behind the wheel knew what to expect when the green flag dropped.
Qualifying speeds broke track records. Going into the race, the drivers really didn't know just how far they could push their equipment.
It was a given that strategy with tires and fuel would play a major part in the outcome of the race. The blistered tires in practice gave teams reason to fear a game-changing flat in the race.
Racing at Michigan was new and exciting at the track in the heart of car country where drivers behind the wheel of Fords, Chevrolets and Dodges wanted to win in their backyards.
Toyota drivers hoped to be the spoilers.
The Quicken Loans 400 gave us some moments that thrilled, surprised and disappointed.
Let's take a look at some of the lessons we learned from the Michigan race.