The guys at ZBoard made quite the splash at SXSW Interactive earlier this week -- riding an electric skateboard around the streets and conference halls of Austin will get you all sorts of attention, after all. Still, for all the love they got at the event, the startup opted to hold its latest announce until the kickoff of Expand -- for an important reason: this electric skateboard is a tribute to the hills and winding streets of the city by the bay. ZBoard's San Francisco Special ups the ga
