All the lethal mistakes of the other nonstarters were wrapped up in Zimride. The founders were too nice. They were idealistic. Their idea was too early—the great wave of smartphone ubiquity and social networking was just gathering momentum. But they were also pragmatic, and they believed in that Silicon Valley notion referred to as “the pivot.” As long as there is money in the bank, it’s never too late to change business models and seek more profitable pastures.

