Since the XB7 is a one-model special ... and the $3,400 Bowers & Wilkins surround sound system is available if you want to upgrade the infotainment system. Matching the Alcantara headliner ...

The key to the XB7’s ability to disguise its ... Others have a signature sound system (like a B&O system). The Alpina has leather. And I was not joking even a little bit when I said I couldn ...

There are no optional packages available for the XB7, which is comprehensively outfitted ... while the Bowers & Wilkins sound system will set you back $3,400. Second-row captain's chairs ($850 ...