AirBnB and Couchsurfing both do pretty well with mixing strangers; the bigger problem is probably that the users would have to keep updating a rideshare site wi

AirBnB and Couchsurfing both do pretty well with mixing strangers; the bigger problem is probably that the users would have to keep updating a rideshare site with their own plans, and the site would have to battle jitney drivers' attempting to take over and spam quite often (I would guess). More to the point, though I hate playing the fearful American, when using Couchsurfing or AirBnB, you know the host's address. When you get in a car, you could end up anywhere.