Whats less than half the price of the Segway, about half the weight and comes with its own smartphone app? That would be the Inmotion SCV (sensor controlled vehicle), easily the most fun gadget we test drove at CES 2014. Seriously, once we started tooling around on this $2,499 vehicle–available in the U.S. later this month–we didnt want to get off.The yellow R1EX model of the SCV looks like a Segway that went on a diet. It weighs about 35 pounds and runs up to 9 miles per hour. An LED screen inside a removable remote shows you your speed as you drive. Youll also find front and tail …