OK, they admit FutureCar made a mistake with the perpetual motion stuff
A new agreement between Tata Motors and MDI bring the air-car closer to reality — Autoblog Green
What worries me is that Discovery Channel could even make such a mistake. No one caught that before the show was shot?
Here's something else I found by googling... my own thread on another forum. Yep, I was really pissed at Discovery.
http://forums.anandtech.com/showthread.php?p=23258568