My only tenuous involvement with RRC Walker was buying a car in 1970something, a little gem of a Fiat 124ST twincam from a Bournemouth dealership that bore his name, the Rob Walker Garages sticker on the back window was worth at least an extra 10mph, though sadly it was red, not dark blue with a white stripe across the bonnet. My favourite Rob Walker story concerns a car he used to own himself, I saw it once or twice at the dealership, a Facel Vega 500, registration RW7. I read, I think in R&T, that his wife refused to drive it, saying that it was too fast for her. Accordingly Rob had the speedo recalibrated so that the dial always showed less than the true speed, not a practice that would be advisable in today's speed camera infested UK.
OT, but that Facel Vega has always been one of my most lusted after cars, along with the Citroën Maserati. Maybe neither of those are really that good, but I just don't care, what presence, what style! I've never driven either, and don't really want to, just in case my illusions would have been shattered, I'd rather dream.