Got a car sittin' 'round, clutterin' up your driveway? Love the idea of handing over the keys to strangers? RelayRides, a recent beneficiary of some Google Ventures cash, has just brought its peer-to-peer car-sharing service to the San Francisco Bay Area. Already available in Boston, the service is sort of a "social bikes-meets-Zip Car." The idea is to let customers rent privately owned (and in some cases, leased) vehicles by the hour: owners receive sixty-five percent of the rental fee, and they're protected by a million dollar insurance policy (drivers have to pay a $500 deductible, which should be large enough to keep people on good behavior). RelayRides is unclear on the exact nature of the keyless entry system (which gets installed gratis when your whip enters the program), but we're guessing it's either RFID or NFC. It also contains a GPS, which is used to track the car's movements and mileage. Interested? Hit the source link to get started.