But I was talking about Crr not cRR!
I also think that Taylor series of a function is common compared to googtuple, but I guess that's just another Crr cRR.
P.S. This reminds me of
that SAE study where the authors estimated flaps on the back of trailers would save the trucking industry something like three quarters of a billion bucks per year. Not to mention the reduction in externalities like pollution...