The section on the Mille Miglia is particularly eye-opening.
I must admit, I have never heard anything mentioned before about Fangio's little stamina pills. They seemed to be made from exotic preparations concocted from Amazonian plants; well, maybe.
Certainly, Stirling feels it was these pills that enable JMF to drive unaided at Buenos Aires in 1955 when everybody else was swapping cars like a suburban car-keys party! He himself drove the Mille Miglia and then apparently could not sleep, so drove up to Stuttgart almost straight away after.
It occurs to me to wonder, in these days of random drug testing of athletes, what might have turned up had his or Fangio's 'sample' been analysed.
Also, again regarding the Mille Miglia, I think I was aware of the fact that the Merc was not pristine when it finished, but until reading the book, I had absolutely no idea how many near misses and close shaves SM and Jenks

I wonder if I was the only one who was unaware of these facts.