GM announced yesterday that it has partnered up with San Francisco-based RelayRides, a pioneer in peer-to-peer carsharing. RelayRides is like a decentralized Zipcar. Instead of owning its own fleet of vehicles, it enables individual car owners to rent out their idle vehicles for short periods to other individuals in their community — for example, an apartment complex or subdivision.

RelayRides has created the online systems that allow for this peer-to-peer transaction to take place, and it supplies/installs the in-vehicle device that allows strangers who have booked a car through the system to gain access at their scheduled times. This model isn’t permitted in every jurisdiction, as changes in insurance regulations — or clarity — is often required first, but RelayRides is starting in San Francisco and Boston, and plans to expand as regulations permit and demand for the service builds. I recently wrote about peer-to-peer carsharing and the whole trend of collaborative consumption in a previous post.

The GM partnership is important for the following reason: GM’s six million OnStar customers can potentially participate in RelayRides (at least the ones in San Francisco and Boston for now) without having to install a special device. That’s because the OnStar service already allows for remote entry into vehicles, so GM is working with RelayRides to allow those renting another individual’s OnStar-equipped car to access the car remotely through their mobile phones. “The integration makes all eligible OnStar vehicles immediately ‘RelayRides ready’ without having to install additional hardware,” according to a GM press release.

“RelayRides has always worked toward providing the safest, most advanced, peer-to-peer carsharing marketplace, where neighbors can help out one another by making their frequently unused car available to those who live nearby,” said RelayRides Chief Executive Officer André Haddad. “With the new GM relationship, RelayRides can leverage the OnStar technology to make carsharing even more convenient, with nothing more than a mobile app. Carsharing has never been easier.”

Does this represent a significant boost to the fledgling peer-to-peer carshare model? I think so. GM’s announcement brings credibility to the concept, and I fully expect the momentum to continue. Peer-to-peer carsharing — or sharing of any physical asset, for that matter — isn’t an easy model to perfect. It’s not like sharing music or movies or other digital files. These are real objects that other people can damage, crash, stink up, mess up, and return late. Clearly, carsharing won’t be for everyone and those who do participate are going to have to be realistic about how their vehicle may be treated by others. But for a certain segment of the population — and I would argue it’s not a small segment — this could be a very exciting development.

Okay, did anyone get that Pet Shop Boys reference in the headline? I kinda like it.

My Clean Break column today begins with a look at a new Web-based beta service launched by a Texas company called Nautical Monkey, and how the trend in peer-to-peer vehicle sharing is poised to expand into many new areas beyond the road. Nautical Monkey was designed to match up people who own boats with people who want to use boats but don’t want the hassle of owning one. The service let’s boat owners make some money on the side for the majority of the year when the boat sits idle, while also providing a way for folks like me — who could never justify buying a decent-sized boat and wouldn’t want the headache of owning one — to partake in the nautical experience without breaking the bank or my marriage. As I say in the column, it’s Craigslist meets Facebook meets Zipcar, with a twist on the traditional time-share model used today by vacationers. Nautical Monkey charges $10 a month for the service, and with that you get all the tools you need to connect with someone and manage the relationship.

It’s very interesting how technology is truly beginning to enable this whole peer-to-peer culture of asset sharing. We have services today like Zipcar (or, for my local homeys in Toronto, AutoShare), which is to car use what Napster was to digital music — a centrally managed system shared by many (though unlike Napster, Zipcar actually owns the asset it’s sharing). Now, we’re starting to see true peer-to-peer vehicle sharing services, where anybody with a car in their driveway can “rent” out their vehicles to neighbours and local strangers. Services like this — Getaround, RelayRides, Spride and Buzzcar among them — are more like all those music-sharing sites that use the BitTorrent platform. It’s not a direct analogy, but close enough. P2P vehicle sharing gets around the requirement for some centrally managed and owned fleet, which can become costly and can’t be done economically when expanding into less dense (i.e. suburban) areas. Now, there are major hurdles to overcome, such as murky insurance laws and logistical challenges, but I’m sure these will be dealt with over time and that first-generation car share providers will help legitimize the approach. For example, Montreal’s Communauto is the first in Canada that appears to be taking this on with the coming launch of a P2P vehicle sharing pilot project.

Now, Nautical Monkey comes along and brings the P2P sharing model to boats. The company has already indicated it’s interested in expanding the model to recreational vehicles, planes, and a host of other “assets” that I’m sure many people would feel comfortable sharing. As more people do, it lowers consumption and the energy required to feed higher consumption, and it creates positive behaviour. Car-share members, for example, tend to walk more, bicycle more, and take more public transit. Let’s face it folks, there’s no reason we all have to own this “stuff.”

Where will the P2P-sharing journey take us? Kayaks, lawn mowers, camping equipment, pressure washers, etc…  the opportunities are endless, and it may pose a significant threat in the not-so-distant future to traditional physical rent-all outlets.

Car-share services across North America are proving they’re not a passing fad as a growing percentage of urban dwellers — facing high parking prices, a lack of spaces, urban congestion and urban smog, not to mention higher fuel prices — are choosing to not own vehicles. Research firm Frost & Sullivan predicts car-sharing membership will grow eightfold between now and 2016, when North American membership is expected to reach 4.4 million. This represents a car-share fleet of 70,000 vehicles. Since every car-share vehicle is estimated to replace 15 cars on the road, this works out to about a million fewer cars on the streets by 2016. It’s a trend that automakers can’t ignore, according to Frost, which predicts car sales will be affected over the long term.

I’ve got a weekend feature in the Toronto Star that takes a closer look at car-sharing in Toronto, where two services — Zipcar and AutoShare — currently compete. I’ve also got a short story on a new car-share service starting out in Baltimore called RelayRides, which pegs itself as the first peer-to-peer car-share service in North America. Instead of owning its own fleet, RelayRides enables anyone who owns a car to sign up and make their vehicles available for short-term rental by other members of the public. It’s an interesting model that, while full of risks and very tricky to implement, could work in certain markets.