Summary: 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.