Update: Tom and Mad did indeed return home safely last night. Their usual hour-long drive was just over three times its normal duration, but neither was the worse for wear (especially once they ate, got changed and ran around).
Or something! Tom is currently stuck on I-15, not moving.
In the pass.
In a snowstorm.
With no snacks or water.
Up until about an hour ago they were moving extremely slowly with CHP escorts, but now, nothing.
He is about 2 miles from a gas station (for snacks, not gas) and 30 miles from home.
Oh, and when he asked if Mad wanted to talk with Mama, she burst into tears.