This is The Stepback, a weekly newsletter breaking down one essential story from the tech world. For more on cars, data privacy, and autonomous vehicles, follow Andrew J. Hawkins. The Stepback arrives in our subscribers’ inboxes at 8AM ET. Opt in for The Stepback here.How it startedEarlier this year, the Federal Trade Commission issued an unprecedented penalty against General Motors: a five-year ban on selling customer data to consumer reporting agencies and third-party data brokers.For years, G...