MBs are prolific in Texas...as are lousy drivers with no driving etiquette whatsoever...
...put the two together and voila! Lousy-driving Benz owners!
Perhaps as MB owners ourselves, we would be more apt to notice them more?
As far as the tactics discussed on that site, I can include a fair share of SUV drivers, owners of large utility vans, cab drivers, ricers, F-body owners, etc. etc...