A year-old partnership between the City of Austin and the Rocky Mountain Institute has yielded its first results: the Austin expansion of a ridesharing app called Chariot. The service works like a shuttle, with passenger-chosen routes. The first shuttle routes from Chariot will run between the downtown MetroRail stop and Whole Foods and ad agency GSD&M with fares of about $4 per person. More routes will be added as they are voted on through the Chariot app.