. >> reporter: that's the pittsburgh peduto wants to leave behind.he city he runs now would seem like science fiction then. >> so we've got these guys too. >> what is this? >> robot cars. >> why are you testing in pittsburgh? >> because pittsburgh is such a difficult city to drive in. they call at it black diamond of driving. >> that's only one of five driving experiments going on in pittsburgh. we bravembraced green technolog. we embraced the things the paris agreement called for as a part of our economic growth strategy. >> reporter: there is another part of the city's future. it lies beneath rolling farmland an hour away, where the state's first new coal mine opened in three years with the president's backing. >> coal is no longer a four-letter word in this country. because of that, that has a big impact on investor relations, lender relations, hiring. >> does pulling out of the paris agreement help or hurt your industry? >> there's the perception issue. >> reporter: the coal here will be used to make steel -- somewhere else. most of it going over

. >> reporter: that's the pittsburgh peduto wants to leave behind. city he runs now would seem like science fiction then. >> so we've got these guys too. >> what is this? >> robot cars. >> why are you testing in pittsburgh? >> because pittsburgh is such a difficult city to drive in. they call at it black diamond of driving. >> that's only one of five driving experiments going on in pittsburgh. we embraced green technology. we embraced the things the paris agreement called for as a part of our economic growth strategy. >> reporter: there is another part of the city's future. it lies beneath rolling farmland an hour away, where the state's first new coal mine opened in three years with the president's backing. >> coal is no longer a four-letter word in this country. because of that, that has a big impact on investor relations, lender relations, hiring. >> does pulling out of the paris agreement help or hurt your industry? >> there's the perception issue. >> reporter: the coal here will be used to make steel -- somewhere else. most of it going overseas.