Despite the beautiful sunshine on this very cold day, visibility was significantly reduced by what can only have been the dust from pulverised road salt that was being thrown up by vehicle wheels. Coming towards the camera, on the other side of this interstate highway, are *five* cars and a semi-tractor-trailer, but cars 3, 4 and 5 — only a couple of hundred yards away and travelling around 100 feet-per-second — would be harder if not impossible to see if not for the fact that all three of those drivers are very wisely using their headlights. Well done, them! Copyright image.
