I guarantee there was a line across that highway that had dry bare pavement on one side and glare ice on the other.
I have experienced that phenomenon in that particular part of Texas with a big truck and it is no joke. You're motoring along at 65 mph with no hint of a problem and your first clue is when you lift your foot and the drive tires lock up.
You pop over a rise in those conditions and you very suddenly find that you are now a passenger.
