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Ohio Sen. Rob Portman and Wisconsin Rep. Paul Ryan, both considered possible contenders to become Mitt Romney's running mate, took a break from campaigning for the presumptive Republican presidential nominee Sunday to enjoy some time on the road. Portman, above, tweeted a picture in his 1917 Model T Ford. "Got my 1917 Model T out this evening to shuttle son and daughter after their float down the river near our house," Portman wrote on Twitter. Taking to Facebook on the same day, Ryan posted a picture in a mini derby car at a fair in Dousman, Wisconsin.