I'm not sure of the exact coordinates of where exactly Bryce crashed or where exactly the skull was found, but around 35 minutes away.
I would love every missing person to be found safe, Bryce included, but unfortunately I'm not very hopeful in this case. Many women dye their hair red, but to see a redheaded man is quite rare in California. I believe there'd be way more sightings of him had he simply walked away from his life voluntarily, or had head trauma and forgot who he was. The only likely scenario I can think of where he'd be found alive is if he's been dying his hair to avoid detection, but he'd really have had to be committed to start a new life to go through all that.
Plenty of people have voluntarily gone missing when nobody expected it and later been found alive, so who knows?