Dave, if you were sitting in one of these, would you take your foot off the gas??
Not sure about Dave, Scottyg, but John (me/I) certainly would: the race is won with the first car/driver doing 200-miles or 2-hours and all you need to be is a nose in front of the next car/driver to win: so yes, John most certainly would take his foot off the gas and protect his bits for the next race and the Championship - no one remembers second place....
Senna used to back-off in soooo many races, way in front at mid-race distance and just in front at the end was enough.
Mansell used to try the fastest everywhere approach and often ended up breaking the car, so didn't.
And Hill just used to run into the back of Schumacher; Adelaide, Silverstone, Monza, etc...
Sorry...