A funny thing happened to visitors to the New York Auto Show on Tuesday — they got to see a concept electric car created jointly by two companies: Segway and General Motors. The prototype vehicle, named “Project PUMA,” is an electrically powered two-seater with two wheels that can travel up to 35 miles between recharges. It basically consists of two Segway PTs in a chassis with a transparent shield covering the top and front, and an electric drive and batteries from GM.