A recent Fast Company state-of-the-effort article on Masdar City includes these conclusions by project managing director Dr. Sultan Al Jaber about the city's 12-pod Personal Rapid Transit (PRT), scaled back from a huge citywide pod fleet --
"We’re not in any way saying the PRT solution will not be a viable solution going forward. Based on our lessons and experience, the development of PRT technology is going to take a little longer than we originally anticipated..." -Fast Company