Uhhh, probably not.
There was snow on the ground where the truck was found. Now I am no expert tracker, but could possibly discern the difference between the tracks of a motorcycle and the tracks of a man (which were found leading from the truck).
Stashed the bike within walking distance - before he torched the truck...or...rode the bike over the truck tracks.
This guy is calculating - preplanned his whole vendetta down to the smallest detail. Definitely watching the TV reports of law enforcement wandering all over the mountain looking for him on foot and having a good chuckle.
JMHO