I am thinking they got stuck, and decided to just wait it out until morning and left it running to stay warm and fell asleep and never woke up. Doesn't sound hinky, just unfortunate. Growing up we were taught if you are stuck in bad storm to keep the exhaust clear if you are running the vehicle to stay warm to allow the exhaust to get out.
The Final Salute
EVERYBODY is pro-gun, some just don't know it. When an anti-gun person is in trouble, the first thing they do is call 911 and demand that they send somebody with a gun!
We've idiot proofed the world... now its full of idiots. - Spiritof76
You will truly be the same today as you will be five years from now, except for two things, the people you meet and the books you read. Charles E. Jones
I think I'll add some memorable quotes. blah blah blah..... FPKites
Trying to understand some people, is like trying to pick up a turd by the clean side.