This is so scary. I have driven many many miles on roads in this condition (but I don't tailgate, which is what the SUV driver was doing)
One time I was on I-71 in Ohio during a blizzard, and a Chevy Suburban crossed a very very wide median, came within feet of front-ending me, then veered back onto the median. They were so close I could see the driver's & passenger's faces, and I had nowhere to go! This video reminded me of that time.