Please read the article guys
The study was on 20 cites and all the rankings are listed. Other places could very well be worse but were not studied so don't get mad that your home town didn't make it.
I do find it interesting that the Canadian and U.S. cities are all on the bottom half of the list. The Toronto and Montreal commutes are easily the worst in Canada for example. Maybe people don't have as much to complain about as they think or maybe the Mexico City commute makes you seriously contemplate suicide every morning.