Episode 2 of Season 1 of “Futurismo,” Automotive News’ new podcast series about the next quarter century in the auto industry, introduces some of the foot soldiers in the mobility revolution — the founders and CEOs of transportation start-ups. They aren’t necessarily the people you’d expect. There’s a mother who was inspired to start a business as she ferried her kids around town; a former eBay executive whose service allows anyone with a car to post it on his website for others to use; and a San Francisco entrepreneur who works with local leaders in the Bay Area to test out ideas that encourage car-pooling.And there is the story of an Iraq War veteran who set up an app that churns through all transportation options — buses, trains, car-and-bike-sharing, whatever — to plot the best route to a destination. The app soon caught the attention of one of the world’s largest automakers.