Really nice work. This doesn't seem to an official site of BMW, though!?
Porsche[1] and Renault[2] did something similar lately. It's great to see WebGL used for this in production. Honestly, I'm surprised it took so long. Visualizing cars with WebGL seems like a no brainer, especially when most current websites load dozens of images for their "360° views".
[1] http://www.porsche.com/microsite/911/germany.aspx#showroom/9...