ONCE UPON A time, car companies were in charge of, you know, building cars. They put that widget against that gizmo and bolted and screwed until the whole thing hanged together—a thing you could buy and own and drive. No longer. Increasingly, car companies—and parts suppliers, and car-sharing startups, and ride-hailing giants—are in the business of data. Collecting it, compiling it, selling it.
