To use AAA’s newest service–a one-way car-sharing startup in the Bay Area called Gig–you don’t have to own a car. The nonprofit, which is best known for its roadside assistance, is piloting the service as one step toward a future where self-driving cars, and dropping rates of car ownership, mean that the organization’s traditional business model needs to change. When the 115-year-old nonprofit was founded, it was during another era of disruption, as commuters moved