Drone video shows a huge crash on a Michigan highway, where over 100 vehicles were involved. Heavy snow made driving very dangerous and caused whiteout conditions.The crash happened on Monday morning, forcing authorities to shut down the interstate in both directions. Officials say between nine and 12 people were injured, though no deaths have been reported.Video filmed by Chicago and Midwest Storm Chasers shows rows of crushed cars and mangled lorries scattered across the motorway. Michigan State Police said an estimated 30 to 40 semi trucks were among the vehicles involved.