. >> a summer song from jason isbell is enjoying great success these days. a whole album of his own songs. it hasn't always been this way as we'll tell anthony mason. >> jason isbell's new album just debuted at number one on the rock and country charts but just a few years ago he was in rehab. you? >> you know, i didn't really hit bottom like a lot of people do. but i could certainly see it coming. >> the fall and rise of jason isbell. >> rust and roots is a tour of an unusual resting place for classic cars. tracy smith will be our guide. >> if a vintage car rusts in the forest will anyone see it? yes, they will, and they will take pictures. is rust beautiful to you? >> oh, yeah. rust. >> and it's gorgeous? >> the car museum that is literally taking root in georgia. ahead on "sunday morning." >> osgood: look who's talking to us a little later, jon stewart, who hosted his last show this past week. >> four nights a week for the past 16 years, jon stewart took aim at politicians, for their hubris, hijinks and hypocrisy. if politicians, didn't say one thing and