jonathan's 6'1", weighs 140 pounds. and may be carrying a multicolored backpack. when you saw the car, what did it tell you about what may have happened here? >> it told me something was really wrong. his brother said, you mean he left his car behind? he loves that car. so i knew something was really wrong. he would never leave that car behind unless something was wrong. he left it in a place that it was likely to be found. he wanted to be found but he wasn't concerned about it, he seemed to move on with it. he sent some texts during his trip saying, i'm going on an adventu adventure, maybe i'm running away, maybe i'm running away from nothing, i need to see this out. the last text anybody saw from him said, i'll text you if i make it out. that's the last word anybody heard. >> i have three teenaged sons myself, and i would not want to have any of them in the position that jonathan appears to have