People seem to forget that CFRP was the primary goal (at least in my mind), and that is already starting to be incorporated into more and more of the vehicles BMW has under development (the upcoming 7-series has a bunch of it from the leaked rumors, and others will as well). This weight shedding, strength increasing, fuel saving building material is (to BMW) a critical component to meeting the upcoming standards.
Given the lack of advertising in the USA for the i3, and the comments I get (BMW makes an electric vehicle?!) selling what they are right now is pretty good. They felt the USA would be one of their bigger markets, and it appears so, probably 2/3'rds of that world-wide total is in the USA.
I do not know how much BMW is advertising the i3 in other parts of the world, but when you are making them about as fast as you can sell them, why would you advertise? People that HAVE bought them in Europe have been complaining about the delay in order to delivery, so would you advertise and make the wait longer? They are selling more than they planned for, have put in orders to expand the production line equipment (but that takes many months), ramped up production of the CF, increased shifts at the factory, and invested another $100M to further expand the CF production.
Doom and gloom is, IMHO, misplaced and uninformed. CFRP is and will continue to expand into the structure of all upcoming BMW models, decreasing weight, giving the opportunity to maintain performance with smaller engines, or, significantly decrease energy consumption, and probably both options will be available. No other modern material currently offers that possibility, and the research to build the I-cars was critical to their learning curve. Call it an R&D project, the payoff can take awhile, but it is real.