Almost certainly there would be the opposite reaction if the passing auto deprived fuel from the passed auto which is essentially what the passing windward boat does to the leeward boat. And while I do not watch Nascar racing, I do occasionally read in the paper about all the feuds going on about some car "bumping" another to push them out of the way. It is amazing to me that this is allowed, (as opposed to severely punished) especially considering the much more severe effects that can have on the cars and drivers compared to sailboat racing. The closest I ever got to that was on Hobie 21s in the Prosail Series back in the day and, guess what? That was run by a group that sponsored Nascar racing!