One particular stretch of road on Interstate 75 seems to be accident-prone, adding up to seven multi-car accidents in 15 years. Each accident was caused by a sudden and impenetrable fog, which forced drivers to suddenly brake without concern for those behind them. Environmental experts and investigators analysed the elements of nature occurring during this unnatural thick fog and tried to determine possible water sources that could create so many vapors in the air. They found one particular paper plant near the interstate that releases significant water vapours, which react to the weather and create this deadly fog.