Win on Sunday, sell on Monday’ has underpinned many a motorsport programme over the years, be it a mega-bucks manufacturer-backed Formula 1, Le Mans or world rally team or a more realistic dealer-supported national race or rally squad.If it seems naive today to think that those six words could convince a mega-bucks industry to write cheques in support of sporting excellence, flick through pictures from the 1960s and you’ll soon get a sense that it was both persuasive and pervasive. Of course, as