A look at the flags in Grandstand # 2. While I consider myself an open wheel race fan, I came away from the Grand Prix with a great appreciation for the American Le Mans Series. While there were different classes of racing going on all at once, a factor I think hurts the series with non-race fans, I found the varying styles of cars to be a plus.
You had Corvettes and Audis on the track at the same time as Porsches and Acuras. I still couldn't tell you which car is in what class, but I thought the Belle Isle course might be even better suited for the ALMS field than the Indy Cars. (A more knowledgeable racing fan can correct me, if that's way off base.)