General Motors will make another push into the realm of alternative vehicle technology through a joint venture with Segway Inc. to produce a two-wheeled upright personal transporter. The auto maker is targeting a 2012 launch for its electric-powered PUMA transporter, which would also employ wireless technology to allow users to navigate in urban areas and avoid traffic congestion. A prototype of the PUMA - which stands for Personal Urban Mobility and Accessibility - will take to the streets of Manhattan this week during the New York auto show.