Back in April, Uber’s smaller, mustachioed competitor, Lyft, quietly acquired a company called Rover, which made real-time tracking software for buses, trains, and taxis. Together, Lyft and Rover started a project that would ultimately become known as “Lyft Line” — a carpooling service that would match Lyft riders going along similar routes and group them together in one car, charging each rider a reduced rate in exchange for sharing the backseat with a stranger.
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