Originally Posted by bimmerjph
From what I understand BMW isn't using aluminum, because they are spending their resources on Carbon Fiber. This choice is smarter in the long run, because aluminum cars in this segment will be outdated the instant BMW rolls out the carbon fiber frames. Supposedly the next 7 series will be the first series model to make widespread use of carbon fiber (see: http://www.e90post.com/forums/showthread.php?t=652528
Well that makes sense and I hope they hurry cause these cars are getting bigger, heavier and pricier.