If it behaves anything like the concrete they used at the Glen to smooth out some of the turns many years ago, it DEFINITELY will have an effect...but all that is a distant memory since the surface at WGI got a complete repave over the off-season and track records in every class which races there is expected to shatter all race records. I haven't seen LMP yet to see what actually got done; Regardless, ANY change will provide challenges to the driver, car set-up, etc.! And that does not mean racing will somehow lose competitiveness; I would expect it be much better--JMO