One Panel #161-163: Vehicular

From Superman: "Europe at War" by Jerry Siegel, Joe Shuster and Paul Cassidy, Action Comics #22 (March 1940)

By sea... Superman sitting on a torpedo, taking a break from the war. As you do. I guess this is why he didn't win it for the Allies right then in 1940.

From The Sandman: "Lady in Evening Clothes" by Gardner Fox and Ogden Whitney, Adventure Comics #47 (February 1940)
By land... Sandman takes a page from the Crimson Avenger's stories and wraps a car around a tree. No really. That happened in almost every strip of the Crimson.

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From Ultra Man: "Tor Attacks America Part 1" by Sheldon Mayer and Jon L. Blummer, as Don Shelby, All-American Comics #12 (March 1940)

By air... Before Wonder Woman's invisible jet... or maybe it's after... Gary Concord's adventures to take place in 2240 A.D.