The FAA is currently working on certification.
Boeing has been approached on, and is studying the feasibility of, mass production.
It is likely that it will first fly in Asia, Korea has a web site dedicated to Molier's aircar.
Japan wants in, the state of California has pre orders in.
In '79 they were predicting 15 years or more, it has taken longer.
Preorder contracts expire Dec. 31st 2006 so look for something big to happen before that date ... don't know if it will be go or no but something has to happen.
Look here also.
http://www.skyaid.org/Skycar/overview2001ALL.htm