A 7-year old girl, being the lone survivor of a plane crash that killed her family walks to safety with minor injuries in nothing but shorts, T-shirt and one sock (no shoes): How 7-year-old Sailor Gutzler survived a plane crash, Washington Post, 5 Jan 2015.
For those of you who do fly for real (and those who go far by road in unpopulated areas): Be prepared, AOPA
A quote from the above (which to a large degree would be overcome with by filing a VFR flight plan and by basic wilderness training, see the article) (my emphasis):
A 2007 study published in a journal of wilderness emergency medicine found a 99-percent exposure mortality rate for uninjured victims whose rescue was delayed beyond 51 hours.