Think about it. Elaine says she had talked to Dylan about the dangers of hitch hiking. Probably several times if she's like most moms. BUT... how many kids do things every day that their parents have told them not to do because it's dangerous? Plenty!
Many of us say our kids wouldn't do something and end up having to eat our words, because they do it behind our backs anyway. Kids think they're indestructible, that nothing bad will happen to them. They take chances, they forget what their parents told them. Or this one time, it will be okay.
Sometimes parents don't know their kids as well as they think they do.
I know a lot of people don't want to agree with this because it doesn't fit the theory that Mark did something to him. But LE has to consider ALL possibilities... that's the only way to solve this case and find Dylan. They have to think outside the box.
I don't have a problem believing that Dylan MIGHT hitch a ride to town if he needed to get somewhere.
But I do have a problem believing that happened on Monday morning. There are a couple of reasons I don't believe it.
He never tried to contact his friend, to say he missed his ride and to try and get one first. He never contacted him to see if he was still waiting there for him.
[ which he wasn't---because he texted D at 10 am to tell him where to go meet up.]
And if by some coinkydink, the cell was not working, he still had a landline, a computer with wifi and an i-pod that texted. So I believe he would have made some attempt to contact his friends before he tried to hitch a ride 20 miles away.
And he knew his dad was coming back at 11, and it was probably close to 10 by the time he woke up ate and watched Spongebob. Why hitchhike in the cold, with a heavy backpack and a fishing pole, if your ride is coming soon?
And if he did try to hike and hitch hike into town, why didn't anyone report seeing him? Is the only person who saw him that morning a serial killer?
ETA: also, we just saw D's texts, where he told his friend he was going to call and text him all day the next day, if need be...