Connecting people with drivers who have empty seats

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1 Review1.0/5
BlaBlaCar has been doing long-distance carpooling in Europe since 2006. It announced a $100M funding round in July, 2014.
Is there anything like this in North America? I'd love to use this as an alternative to systems like Megabus/Greyhound.
@azilnik Yet another feature of Craigslist soon to be disaggregated by a standalone service. Nothing like BlaBlaCar in North America at this point.
BlaBlaCar is quite big in Europe (1M persons sharing rides each month).