Ekardh's suggested scenario about someone giving a false pretence of having to stop by their house for some errand and lures Jason inside, is absolutely a possibility, as that is a tactic that has been used before. I for example immediately came to remember the murder of teenager Daniel Morcombe, who was offered a ride after having missed the bus, but was in actuality taken to an abandoned house at a farm under the pretext that the driver, mr. Brett Cowan, just quickly had to tell his wife where he headed;
http://www.brisbanetimes.com.au/que...confession-shown-in-court-20140227-33md8.html
However if a similar scenario to this happened in Jason's case, it must have been someone familiar with the surroundings, like someone who either lived nearby, or who at the least had regular access to some nearby place, as it would have been very difficult to make an excuse for any longer distance drive as Jason after all had a waiting meet-up just fairly nearby, and a longer drive would undoubtedly have raised suspicion.
Of course this only applies to the actual luring-away-to-some-place scenario, and not to a scenario where the victim after entering the vehicle is drugged with a rag of chloroform or held at weaponpoint, as the perpetrator in such a case can drive as far away with the victim as he wishes.
I think it might be a big red herring to exclude a stranger scenario on the grounds of Jason being shy, as I can personally testify to myself once having been very shy as a child and adolescent, and yet it was very easy for that man I told about earlier to invite me into his car under the offer to drive me home; an offer I readily accepted and jumped into the car, despite me having no idea who he was and despite only being 2 blocks from home.
I can so easily see Jason walking along the road when suddenly a car slows in, and the driver, a complete stranger, leans forward a bit, saying; "Hi! You need a ride or something?"
Jason: "Nah I am just going a few more blocks to a meet-up."
Driver: Well where is the meet-up waiting?"
Jason: "Just at the school"
Driver: "Why that is exactly the direction I am heading! Hop in, I'll drive ya!".
Jason: "Okay, cool, thanks".
That someone is shy doesn't mean they won't take a bate. In fact, I would rather say that specifically
because a person is shy, it can actually make it
more likely that the person will accept offers like for example a ride, as shy people often tend to be more likely to comply with people rather than rejecting them or, as the shy person might see it, "being difficult".
For this reason, it could just as well have been a complete stranger that might not even have been native to Omaha that were out cruising and then noticed Jason walking and seized the occasion. We must in this aspect also keep in mind that such predators can travel many miles accross countries and between states. Either in order to avoid suspicion, or because they have jobs that requires them to travel a lot.
I have really no specific opinion on the older man, however in a theoretical scenario, the lack of further victims could very easily be explained with that 'one victim' being something completely unpremeditated, either like manslaughter or even an utter accident.
