I actually wouldn't be surprised.. In this case it's more likely a call to Trump that went something like "heya fellow rapy, rich dude. Listen, I could afford a lot more new yachts if I didn't have to pay for all this pesky nercury detection and filtering stuff, can you help me out by being your douchy self?"
I imagine them being forced to constantly run so close to each other can lead to a build up of frustrations that could eventually culminate in a duel. I'm not sure why the carwash would discourage people from breaking up a good wheel-fight, though.
I definitely think it's less common, and my first thought is that it's probably down to a general switch to less formal wear? My dad wore a heck of a lot more white shirts than I do.
I think maybe I do!