I found this engineer to be very credible, too. I read the transcript provided by another Websleuther (thank you!!). He may be right and he may be wrong, but I believe he is convinced that the guy in the white truck was Brian Laundrie, and this sighting should be taken seriously. I thought the part about the profile was very interesting as well.
Now, as far as the truck driver's (BL?) demeanor and bizarre comments regarding California and taking the road he was on to get there, is it possible that BL could be dehydrated enough to exhibit such behavior? I'm not sure why a young, ambulatory man WITH transportation would allow himself to get that dehydrated, but I know the condition can cause some very confused and bizarre speech and actions. MOO