I've always wondered why something like BlaBlaCar does not exist in the US. Or why BlaBlaCar does not expand to the US. True, people are more used to taking do

I've always wondered why something like BlaBlaCar does not exist in the US. Or why BlaBlaCar does not expand to the US. True, people are more used to taking domestic flights because of distances but I can think of routes, such as between NYC and Boston, where carpooling could be a good alternative to the train and cheap buses. I'm sure there are others too.