Then: Zimride started life in 2007 as an app designed to help students at his school, UC Santa Barbara, find carpools for the long-distance rides back home.
Now: In 2012, Zimride spawned an offshoot company called Lyft, a car-on-demand app that presents the juggernaut Uber with its most direct competition. By 2013, Lyft was the rising star, and it ended up selling the Zimride assets to Enterprise, which earlier this year decided to close it off to everyone but businesses and schools. Meanwhile, Lyft is fighting the good fight with 2.5 million rides per month.