These cars have been stuck for about 9 hrs. The Interstate is so slippery (ice under the snow) that the semis can't get up a slope in the southbound lanes and accidents have slowed the northbound lanes too.
The National Guard has been called out to help the State Patrol get the traffic moving and to get them food and water. Snomobile clubs have come out to help also. They are going car by car to check on people, get gas where it's needed. Some of the Blackhawk planes have been sent to patrol the area to radio in where cars are off the highway in the ditches and can't be seen from the highway.
I'm listening to this on our local TV station now. but here's a link to Channel300.com story.
http://www.channel3000.com/news/15239429/detail.html