This is interesting. Luckily the family had a cellphone and were able to give a general location to a family member which initiated a search. Full details are in the link below.

Rescuers on Wednesday pulled a Texas family from an SUV that had been buried in a snowdrift on a rural New Mexico highway for nearly two days.
State police said rescuers had to dig through 4 feet of ice and snow to free the Higgins family, whose red GMC Yukon got stuck on U.S. 56 near Springer when a blizzard moved through the area Monday.