Even being the massive NASCAR fan I am, Michigan International Speedway was always really unassuming to me. It's just another 2 mile D-Shaped Oval that isn't nearly as difficult as its sister track, Auto Club. At least, that's what I thought until I tried it on NR2003.
It is such a tricky track to get down. 220 MPH into turn 1 and at least 212 into turn 3, only ever slowing down to about the mid-170s, all while having to avoid the entire bottom lane because it has less banking while still having to use that lane occasionally to pass. There's only 1 lane you really can use, the middle lane. The bottom lane has little banking to hold the car and you lose more time than you gain despite taking a shorter line around the corner. Get any higher than the middle lane, and the only thing your tires are touching is dust and marbles and now you're spinning or hitting the wall.
Again, growing up as a NASCAR fan, I know how hard ovals can be. But even Michigan caught me off-guard with how deceptively tricky it is.