When you see David Goldberg sitting atop his porcelain throne, you'd better thank him.  Goldberg, after all, is doing his part to keep streets in Bethesda, Maryland clear of snow.  The only difference is he's riding atop a toilet that has been converted into a snow plow.  WUSA-9 reports the local business owner has gotten a lot of crazy looks this week, but Goldberg says his modified machine has done a great job so far.  He's named it "Loo-cy."  He recently added a salter mechanism, and by next winter he says he'll have a heated seat.