Thus far, car sharing services have looked a lot like traditional rental programs. Sure, there are a few key differences — cars located near potential drivers rather than the airport, membership models, etc. — but Zipcar and WeCar still provided cars they bought to customers for set time periods. In February, I took note of a different model — distributed or “peer-to-peer” car sharing — in which anyone who owned a car could rent it out to someone else. RelayRides was just getting off the ground on the East Coast, but legal changes in California may make the Golden State the place where distributed car sharing really takes off.