With growing awareness and popularity, the car sharing market has recently witnessed the arrival of several P2P services like RelayRides, Getaround and Sprideshare and Jolly Wheels.

FORBES: Zipcar Scooting Up To $27 As It Gains Share, Fights Off P2P

His rationale: since BT is spyware-free, relatively easy to use and decentralized, it avoids most of the problems that plagued the original Napster, Kazaa and other P2P services.

ENGADGET: The Pipeline: Mossberg on Napster to Go, Dvorak on the blogosphere

In fact, we believe these new P2P services could be more complementary and encourage more people to consider car sharing programs over car ownership in dense urban population, which in the end could help Zipcar.

FORBES: Zipcar Scooting Up To $27 As It Gains Share, Fights Off P2P