After quoting Mark Feeney's recollection of seeing the late Robert McNamara in a mundane traffic jam, and mentioning that in the 1990s I once sat down on a DC metro car and was startled to see that the dignified gent in the next seat was McNamara, I agreed with Feeney's claim that modern counterparts like Rumsfeld and Cheney were not likely to expose themselves so freely to the general public.
At least about Rumsfeld, turns out that is wrong. Or has been wrong at least once. Four months ago (when, in fairness, I was somewhere in western China, so I missed it) the Firedoglake site reported on Rumsfeld's adventures while riding a DC metrobus. Details here. Wasn't clear from the item whether he'd likely ride one again. Thanks to reader DF.