Take a look at Jason Shen (and others)' startup, Ridejoy. Its geared towards ride sharing, not carpooling, but uses the business model you're talking about htt

Take a look at Jason Shen (and others)' startup, Ridejoy. Its geared towards ride sharing, not carpooling, but uses the business model you're talking about http://ridejoy.com/ http://ridejoy.com/