Perhaps no one knows the ins and outs of BRT better than Walter Hook. As director of the Institute for Transportation and Development Policy, Hook has advised cities on four continents about BRT implementation, including Jakarta's seven-corridor network, the first full-fledged BRT system in Asia. Streetsblog caught up with Hook -- in between trips to Cape Town and Mexico City -- for an email Q&A about why New York City needs Bus Rapid Transit, common misconceptions of BRT in America, and what will make BRT succeed here.