It was just an average guy chasing the kids.
Except this average guy seems to know everything and is able to keep with CB radio contact range at all times. As a revenge fantasy, I thought it just completely bent the laws or plausability. Nobody goes to this much trouble because someone plays a prank on them.
Also, about the ending, it was a real groaner for me. So not only does the omniscient trucker kidnap Venna's roommate, but he also kidnaps the ice trucker that he plowed through earlier in the film. I mean the ice trucker had to still be alive before the finally or else the cops would have noticed he was pretty cold to be driving a truck through a motel. Just bad, bad, bad and calling for an unnecessary sequel.
Did anyone else think that Ted Levine (Buffalo Bill from SitL) was the voice?
According to Ebert's http://www.suntimes.com/output/answ-man/sho-sunday-ebert21.html
Amazon Hot 100 DVD's