Shelby first tried carsharing when his car died after a cross-country move to California. He loved living a car-free life, but thought carsharing would work better and grow faster if it was "for the people, by the people", a neighbor-to-neighbor experience. So he founded RelayRides. Shelby obtained his MBA from Harvard, where he cultivated his passion for entrepreneurship and social impact. Before Harvard, Shelby helped launch three socially focused startups. He was an early employee at Kiva.org, one of the fastest-growing nonprofits in history, where Shelby provided strategic direction while building internal systems to scale the organization. Previously, Shelby worked at Oliver Wyman as a management consultant, advising Fortune 500 companies on strategy and operations. Prior to Harvard, Shelby graduated with a degree in Biomedical Engineering from Northwestern.