1989 NASCAR champion and ESPN studio analyst Rusty Wallace had yet another hat on last week. He was in Phoenix for the Barrett-Jackson Auto Auction to “re-sell” a highly modified race car to the bidders there. But Rusty has yet another issue on his plate. He’s sharply critical of ESPN show host Keith Olbermann who argued last week that motor racing wasn’t a sport. Wait’ll you hear how Rusty answered that charge…