August 22, 1902

Learning blogs observes that on August 22, 1902, Teddy Roosevelt became the first president to make a public appearance in an automobile. Elsewhere, the post observes that McKinley was the first president to ride in a car, tho apparently not related to a public appearance. And, the post observes that Franklin Roosevelt was the first president to fly in an airplane, in 1943. LBE seems to recall a movie about that one, which featured the pilot.

In terms of days, the MLK mall statue unveiling is August 28.