It was caused by the white stuff on the road and the conditions he was driving in but as above I think it might have been caused by the white stuff you put up your nose as nobody with any sense would come round that corner the way he did unless you are under the influence of something.
Yeah that's a road with a layer of ice on it, with a layer of snow on it. Pretty common in the midwest, where they dump literal truckloads of sand and salt to combat it.
All seasons and slightly bald tires will act like that with the slightest bit of slippy stuff. In Colorado they wait 4 hours for the sun to get it for them, much less often do we have the super low temperatures and drizzle problem, but had to get snow tires after 25 years living in the Midwest because they refuse to plow or use salt/chemicals here.
Even four wheel drive won't save you on crazy thin layer of ice, have spun the Explorer completely 360 in 4x4 mode going about 20mph with a layer of ice so thin you can't even tell its there (usually caused by drizzle and very low temps), once you get it going it can be incredibly hard to get 3000+ pounds stopped on ice skates.
I did that in October with my nissan pathfinder on Banana skins. was time for new tires as well. In another life, I was the 3rd shift Casino bus ( Tour Bus sized Bus) driver for employees back n forth to Mpls St. Paul a couple years. Ice Road Bus driver. 63 miles round trip every 3 hours. wee ha...