Board Thread:Challenge Threads/@comment-30632654-20170217140545/@comment-33110878-20180208213444

The main difference between this perpetual endurance and the Porsche Short track with the FXX K is the amount of "forgiveness" worked into the race. One small mess-up with the MP4-X and it's all over, where with the FXX K you can wreck or spin out and still "catch the train" and get your clock back up to 90.