philadelphia and his local post on this visit. he is a franciscan. imagine what it means to him to be able to host the pope named francis. the pope always invites the local bishop of the diocese he is in to ride with him in the popemobile and to be with him at every venue because for this pope in particular it's important to send a message that he is not an isolated autocrat, that he's trying to govern the church in communion with his fellow bishops. the catholic world would call that collegiality. this is kind of a visible symbol of that communion among the bishops. one of the pope's titles is bishop of rome. >> you can see the crowd surging there, almost kind of pushing on one of the barricades. there's so much enthusiasm here. >> one thing i'm looking for in the coming weeks, that is in the past when he has driven in a fiat, he has asked that that fiat be auctioned off to give money to the poor. so we have at least several of these fiats and several of these