Couple things:
The article is from 2013
Since when is a Prius a luxury (article said luxury brands drivers are more likely to flaunt the laws)
Also they mention the rich people smuggness. Yet the "Millionaire next door" books tell a different story ... And I think Dave Ramsey's team just did a fresh new millionaire study.
Also depends on the area. in Chicago, I had been cut off by trucks, box trucks, semis, VW, BMW, civic hybrid, taurus, taxis, airport uber's (seems to be the traffic way at ORD), bikes, bicyclists ....
I GA you will be lucky to pass around the slow-pokes that do 35 in a 55...or be in the way of the 90 in a 55...