Curriculum Potential and the Hydrogen 7

I have read all the submitted papers. They were thoughtful and well written. There was one thing, however that almost everyone missed. (though some comments sort of side-swiped the issue). My interest was triggered by the one student who said that the purpose of the commercial was to sell those BMWs. But no one went on line to see whether there really was a Hydrogen 7. There was or is. So, look at this:

http://www.autobloggreen.com/2006/09/12/bmw-officially-announces-the-bmw-hydrogen-7/

There is clearly a debate as to whether the Hydrogen 7 is truly ecologically friendly, or whether swe are barking up the wrong tree. On the other hand, notice that the critics sign only their name, not their credentials. Who are these guys. As it stands, this is no more than "talkback" or letters to the editors.

All of this has additional relevance to curriculum design and development. How do we know that we are teaching, as Robin Barrow asked, the right things?