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.
This article available online at:
http://www.theatlantic.com/technology/archive/2009/07/i-stand-corrected-chapter-2-374-612/21026/
