Abu Dhabi and Masdar

I have visited Dubai a few times but have not yet visited Abu Dhabi, which is the capital of the United Arab Emirates and just 1 and 1/2  hour drive from Dubai. Someone told me that Abu Dhabi is rather conservative and is quite different from the open and cosmopolitan culture in Dubai.

Abu Dhabi has a bold project to develop a new city, called Masdar. It is being marketed as what a modern city should be. It uses renewable energy and has an underground system using automated, driver-less personal vehicles. This allows the pedestrians to walk at the street level free of vehicles.

I heard that the development of Masdar is behind schedule - still, I am interested to take a look.