1926 : Michigan Reports 1M Registered Cars Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: May 22, 2018 all-day Repeats 2018-05-22T00:00:00-04:00 2018-05-23T00:00:00-04:00 On May 22, 1926, Michigan became the nation’s sixth state to register and license more than 1,000,000 automobiles. Source: Mich-Again’s Day.