Fog Tunnel

It's dusk, the light is blue and low, almost gone, and all around is fog. Low-lying, kissing the earth, the road, the cars rushing along it. Shadowed by the tall trees, brushed with the midnight-blue shadows the sky gifts it, settled to the sides. Ahead, where the headlights touch, it is a wisp of white-grey. The blue fog is like a tunnel, enveloping the traffic, channeling it along a path all its own - apart from the world. If you pulled to the side of the road, would you even recognize what was there? Or would it be as fog-touched and distant as it seems from the middle of the road, rushing past?