vehicles involved. at least six people killed and more than 60 going to hospitals for treatment, including rebecca benson, telling us from the e.r. -- >> i am unbelievably blessed. the fact that i am not severely injured or dead is nothing short of a miracle. >> reporter: and the traffic backed up for miles. this is a massive crash scene. you can see in the distance there cars and trucks twisted and crumpled. crews trying to reach people trapped in the wreckage. the subfreezing temperatures making those rescues all the more urgent. >> the trauma from the crash combined with hypothermia continues to be a concern. >> reporter: and watch as firefighters even rescue a dog from the wreckage. south of here, in austin, a 26-car pileup. and outside atlanta, another deadly pileup involving more than a dozen vehicles on interstate 75. the storm system wreaking havoc across dozens of states, from texas to the northeast. at pittsburgh's airport, an atlanta-bound delta jet skidding off the taxiway wednesday night. the 77 people onboard exiting