You people really need to look at sources before spouting crap.
The
rumor of flying cars was started by the science
fiction author Arthur C. Clarke. Ever seen 2001: Space Odyssey? Yeah, that was him.
Whereas, this on the other hand is said by a scientific engineer. He is also a science
non-fiction author. There is a difference.
Now, I'm not gonna guarantee he is right, just saying that the flying cars in 2000 example is awful, and shouldn't be used unless you like to be thought of as ignorant.
As a reference for a scientific prediction that held up over the years, I'd recommend looking at
Moore's law, if you haven't already (you should have).