Driving to work Kay notices some smoke in the distance. The closer he drives, the bigger the cloud starts to become. He starts to notice its enveloping the surrounding building quickly. All the traffic in front of him miles ahead just seems to be disappearing in to the cloud. Being from large cities it doesn't seem like to much of an issue. Could just be heavy fog he thinks. Closing in about a mile out he starts to notice how thick this cloud really is. Why am I getting this horrible feeling? This was supposed to be a great day!

Crash! A loud explosion def-ins Kay as the impact of the airbag feels like a punch in the face. "What in the fuck?!" Without realizing it, the cars in front of him must have slammed hard on there brakes!
Groggily trying the door he knows its pointless so he starts to climb out his shattered drivers window.
As he climbs out he notices that its not the cars that slammed on there brakes, its a line of cars piled up as far as the eye can see!