There are no functional, real-world examples of a Hyperloop, Tesla founder Elon Musk's long-distance transport concept that involves shooting people through vacuum-sealed tubes in pods that travel at up to 760 mph. And yet a surprising number of government agencies are treating the Hyperloop as a serious proposition.
In American cities, gondolas have mainly served as a distraction from bigger problems facing urban transit systems.
Cat calls, patronizing enjoinders to "smile," and more aggressive forms of harassment can make walking or biking uncomfortable or threatening. Katie Matchett, an urban planner who writes about pedestrian issues at Where the Sidewalk Starts, still recalls getting harassed on the streets of San Diego as she was beginning her career 20 years ago. She says it's up to everyone -- men and women -- to combat it.