Continuing west on US-12, we come across the Michigan International Speedway. Because of it's bank and width, it is known as one of the fastest NASCAR tracks. It currently has a seating capacity of 125,000. It currently hosts two NASCAR sprint races and a couple other races.
This is a shot of the press box.
The US-12 entrance.
One of the other entrances.
Another angle of the pressbox.
Sadly, I couldn't get close enough to see the track itself.