UPS Has Been Secretly Using Self-Driving Trucks In Arizona For MONTHS Prison Planet.com Posted on August 20, 2019 Posted in Aggregated No Comments Tagged with Sci Tech Mac Slavo | The United Postal Service has been using self-driving trucks to deliver cargo and no one knew about it. Share this:Share Share on Facebook (Opens in new window) Facebook Share on Reddit (Opens in new window) Reddit Share on X (Opens in new window) X Share on LinkedIn (Opens in new window) LinkedIn Email a link to a friend (Opens in new window) Email