Segway's x2 Personal Transporter ($5,500; Sept.) is a new all-terrain version of the ultra-geeky, two-wheeled machine. The x2 features cross-terrain tires, a wider track and higher ground clearance, and protective fenders with built-in lift handles. The transporter also offers Segways's new LeanSteer technology for turning and a new wireless InfoKey controller that turns on the x2 and acts as the speedometer, odometer, trip computer, battery gauge, and security system. The Segway x2 has a top speed of 12.5 mph and can travel up to 12 miles on a single charge of its lithium-ion batteries. The x2 will also come in three other specialized models — the x2 Golf, x2 Police, and x2 Adventure.