and peter greer discusses the magazine's democracy under strain theories, looking at america's political structure in the challenges it is facing. and locklin marcaine talks about ethics in the trump administration. be sure to watch c-span's "washington journal," live at 7:00 eastern this morning. join the discussion. >> detroit put the world on wheels. in one generation, this and other names created america's number one industry, and the unheard-of idea that everybody can ride. vision with know how. that is detroit. city you know the motor nothing in the world we can't do ♪ i got impeccable timing. the c-span cities tour is on the road exploring the american story. >> there is a lot of development going on. businesses opening up oma restaurants and stores. >> 90% of detroit is outside of downtown. i don't think johannesburg is a good model for development. announcer: with the help of our comcast cable partners, this weekend we take you to detroit. >> the city of detroit itself was founded by the french in 1701. >> the detroit river was the busiest freshwater shipping channel in the worl