Mad Men’s Don Draper dismissed Los Angeles as “Detroit with palm trees.” Now the city that gave us car culture — and a whole lot more — is on its knees. On this DnA, LA-based, Detroit native Andrew Zago talks about Motor City’s rise and fall, why the “creative class” failed to save it, and the “difficult conversation” that has to take place if its unique urban problems are to be fixed. Plus, Neverbuilt exhibit at A+D Museum will show the visionary and mad schemes for Los Angeles that went unrealized. Matt Holzman tells the stories behind the unbuilt projects, starting with the thwarted dreams of Frank Lloyd Wright, and his son Lloyd.