[PDHse]

In my view Ken Miles was the man who was the "most important role in the Cobras early sucess".Obviously the Cobra was Carroll Shelbys idea and he got the ball rolling but as the thread title asks it has to be Miles.
Besides money a car has to be developed and from what i have read in all the books out there Ken Miles tested, tested and tested those cars until they were winners.

Its the same recently with Michael Schumacher with his years at Ferrari, he tested all the time when other drivers were taking holidays.