http://www.galwaydailynews.com/2015/01/15/scientists-confirm-link-bmw-ownership-asshole/
"Scientists at the Dutch Institute of Science have discovered the key. The s02 gene, located deep in the anus, is responsible. After studying the genetic blueprints of over 400 BMW drivers the scientists discovered they shared this remarkable little gene.
‘We have long theorised that BMW drivers are complete and utter assholes, but now at least we have the scientific data to back it up’, stated researcher Smorg Van Baarg, who drives a Saab."
Mají prostě takový gen. Tak pozor - nekupujte si BMW!