I typically find myself coasting along doing 90 in 55 zones, and I'm certainly not the only one. I do get to my destinations faster than all my friends and I practise the space in front of me strategy to some extent because it allows me to speed up safely in my own slow lane before switching into openings into other lanes without impeding other drivers.
However I've noticed my black friends road behaviour is very different from my white friends, even when they're sitting in my passenger seat. I've noticed police officers will harrass them much more for the littlest things. Maybe black folks here are so -how to say- "in tune" about the racial profiling that they all seem to drive 5 mph under the speed limit.
So my two most common comments on slow clueless drivers are cellphone talkers and black folk. I'm willing to bet if I was black I'd be slowing down too cuz the cops here can be real AS*H*LES. Well, not to me of course... But I feel for you