The Biden administration announced it’s putting $8 billion toward expanding the U.S. rail system. Travel by train is climate-friendlier than flying or driving, and in parts of Europe and Asia, it’s commonplace. So why has the U.S. been slower to build high-speed rail? Also in this episode: Amazon Fresh delivery tries out subscriptions, part-time workers find full-time employment and it’s tricky to predict labor demand for the holiday season.