Huh? I am not aware of a post that said he was in San Diego last night or that he was thinking of quitting. He got a ride to Phoenix from an undisclosed location. He didn't say from where or how far the ride was, but he should have been way past San Diego by then. If he rode for 6 days and was still in San Diego he might as well quit now, but I doubt that is the case. It is too bad he needed to take a ride, but his planning and provisioning were poor at best, so it sounds like it was necessary given that.

He will be going self supported here. That is the real test of how he will do IMO. I hope he is up to it and wish him well. It is certainly an entirely different experience carrying your gear as compared to having a car following.