Murph you have a good eye the Black Car with the Blue Lightening -- was the fastest car I have ever helped my kidos build -- we finally had three sub 3 second times... I think with a tiny little bit of tuning we can consistently be under 3 seconds. - Personal Goal of mine... on a 42' Best Track
Great question on the looks versus benefit... it is the first year we used them and we ran the fastest times ever on the 42' Aluminium Best Track - one of the cars run sub 3 seconds which on Dry Lube I think is pretty fast. I am convinced that they helped stabilize the cars as they fly down the track.