Aside from the fact that driving a BMW is an easy way to proclaim to the world "I'm an asshole!" there's a tangible reason not to want one (even if I could afford it). The new ones are controlled by Microsoft Windows CE, as glowingly described in a Microsoft press release. Anybody knows this is just asking for trouble, as learned the hard way by Thailand's finance minister and his chauffeur. Considering the somewhat primitive recovery technique, I suppose it's a good thing the car windows weren't any more bulletproof than the MS Windows.