2. Cello was in trouble before the mandate was in place. They were in trouble partly because there was no demand for their product (and because of bad managment, but pointing to them and claiming that it can't work is like pointing to AMC and claiming it isn't possible to make cars and a profit).
3. Your post has nothing to do with the ability of mandates to generate demand. Again, Brazil did it through mandates. At the same time, we couldn't have because we don't have the sugar ag to do it, but as the links I've included indicate, the technology has changed. The current studies indicate that we are AT LEAST at the break even point (again, see the links I posted).
4. Your post repeats the claim that the penalty will affect prices, which Predicto debunked in this thread a year ago and is based on economic ideas that were discarded over 100 years ago.