Tesla drivers log 1 billion miles on Autopilot

2017 Tesla Model S testing at Consumer ReportsSelf-driving systems are like teenage drivers: They get better with practice. Tesla announced in a Tweet on Thursday that its cars logged 1 billion miles driving on Autopilot. That's a key milestone, since Teslas driving on Autopilot (and driven by humans) send data about what they see on the road back to Tesla, so the company can address problems...