I drive a lot due to work. Maybe 20,000 miles a year. I drove in that stuff yesterday just before all hell broke loose. The thing that I see all the time, is people "over driving" their cars. I don't think that they teach physics anymore.
Specifically in the stretch of I-75 from Toledo to Detroit, because of the lake; and in Toledo on I-75 due to the curves and overpasses, it's particularly dangerous. The overpasses cast a shadow, and they are often over a curve in Toledo. You hit a patch of ice in the shadow of the overpass and you are also having the forces of the turn. If it is really slick, I'll route around I-75 through Toledo.
North of Michigan, (The busiest stretch of interstate in the US) the fast lane ices up first, because most traffic slows down and moves to the right. The plows work from the shoulder in, so the fast lane is always first to get sketchy. People are flying up the fast lane at 80 mph, passing two lanes of traffic going like 55, and they suddenly lose their lane and have nowhere to go. And they probably have the cruise control on. Eeek. So they try to slow down..... and they're done. I try really hard to find and stay in pockets with no cars around me when the opportunity presents itself. Lowers my exposure and reduces the stress. I have probably seen 25 spinouts and a couple of crashes in the last five years personally. (You learn the notoriusly bad spots, like the day I saw 5 cars in the valley between the I-75 lanes at the Trail. They try to get on at highway speeds but that curve and dip gets em.
Last week, I followed a person off an exit in downriver and they had damage on every side, and their front bumper in the trunk, hanging out. Flashers on, for safety. :)
When an icy spot suddenly appears under my wheels, I repeat those famous words "stay the course" and delay any input until the chances of success are greater. I think about sports like curling or hockey.