Yea, you might need RM or radio to make sense of the race.... very confusing. Some guys are 7 or 8 laps down
I went once, couldn't figure it out until it was down to 14 cars
the leader board in T2 helps alot. But it gets confusing keeping track of which cars are in the top 5 because they havn't pitted yet and still need to. I wish the scoreboard would provide more information, like scrolling the full field periodically or showing how many pit stops each car has already made.
It helps to try to pay close attention to the pit lanes and notice when the cars go in for a pit stop. If you miss the leaders going in for a pit stop, you can get confused pretty fast.
By the last 100 laps the scoreboard pretty much has the top. Then you just have to try to remember who is on the lead lap and who is not.