Looks pretty cool. I especially like the twisted rotunda shape at the left end. They could have just done the simple twisted cylindrical shape, but they took it a level above that with the faceted surfacing texture below (looking at the scale, I suppose it's probably made up of windows--something decidedly not considered texture when you're looking at it from a few feet away) and the way it deconstructs towards the top.
I'm not a fan of the way the large roof stucture kind of melts downwards though. For something BMW, especially, I would like to see things stay flowing but more taut.
Looks like the article mentions Summer of 2007. Is that when they will begin construction, or when they will complete it?