BMW's M division is known for turning the brand's already competent vehicles into exceedingly fast thrill machines. But there are gaps in M's coverage. That's where long-standing BMW performance house Alpina comes in. In the absence of an M-tuned BMW 7-Series Alpina has stepped up to the plate to give it a complete performance makeover. In this video Alpina's top man, Andy Bovensiepen, shares the finer details of the 2011 BMW Alpina B7 with KBB's Micah Muzio. For more new car reviews, interviews and automotive news visit http://www.kbb.com today. To follow this editor on Twitter, please visit: http://www.twitter.com/kbb_micahmuzio