One minute, you are driving along with normal or near-normal visibility, and you can see a few hundred yards in front of your vehicle. Then, suddenly with little or no warning, you can barely see two car lengths in front of your vehicle. If you see taillights, it's probably too late to attempt to stop. This type of nightmare driving condition is common throughout the East Coast and the Appalachians in Georgia, and Easter Sunday, it occurred on the border of North Carolina and Virginia, as the fog closed around dozens of motorists, causing fatal, chain-reaction accidents. Three people were killed and 25 were injured in car and truck accidents involving 95 vehicles. Fog and highway driving makes for a particularly deadly mix, because even if you slow enough to avoid hitting another vehicle, and manage to stop, you have no assurance that any vehicles following yours are going to…