On Saturday morning I packed the Brompton into its suitcase, headed to the airport (thanks for the ride, ladyfriend!), and flew to Detroit for a few days of bicycling and learning about how another postindustrial city is doing its public memory. It’s pretty much a dream vacation for me–bikes, cities, history, bikes, waterfronts, history, beer in the afternoon–magic. I spent my Sunday getting my bearings. I first walked around in circles for almost a full half hour before finding my way to the coffee shop and bakery that was two blocks away. Then I went a couple miles out of my way trying to find my first stop: the Detroit Historical Society. Eventually I found it, and I locked up Brompty to a well-designed bike rack, and headed inside.