It's very pretty and a neat idea, but I don't think there's a chance that Fisker can make the car for the projected price. They are a very, very small company with no production facilities who intend on hiring out all their manufacturing and production. These sorts of arrangements have been done since the dawn of car manufacturing and can work well, but each entity has to add their own profit. Last time I heard, Valmet in Finland was going to actually produce the body and chassis and assemble the car. They have a similar arrangement with Porsche for the Boxster. Take a look at the size and complexity of the Boxster and then compare that to the Fisker's size and complexity, and then figure what the Boxster costs vs. what Fisker is projecting. Porsche also has the huge advantage of being able to use lots and lots of little bits from VAG (VW-Audi), which Fisker does not. Making limited production cars is an expensive business on a per-car basis, and there is no way around that.
I predict that either the Fisker will appear at a much higher price than has been announced, or they'll eventually sell the whole project to a larger company. Either way, I wish them luck.