take notice race track owners. the bottom groove (shortest) is completely flat, almost reverse bank. the middle groove is slightly banked and the top (longest) is the highest banked part of the track. this is a very good race track design. if your race track has too many cars running at the bottom flatten it out and add it to the top. the results are happy fans that tell their buddies where to see great races. thank you kokomo, you give all of us hope that racing can be healthy and fun for the future.