When the US enacted the 55 mph freeway limit in the 70's there was a pretty widespread awareness of the issues involved in slowing down because it directly affected so many people's lives.
I remember reading an account of a guy from that period who had fists shaken at him and horns honked at him
for speeding past slower cars on the highway.
Hillary clinton publicly mused about
returning to the 55 mph limit in 2006, but I think (can anyone confirm this?) she has since backed away from the idea.