"Will the Real Space Cabbie Please Stand Up?" from Mystery in Space #57 (DC, 1958) by Otto Binder, Gil Kane and Bernard Sachs
Mystery in Space isn't just Adam Strange, people! It's Knights of the Galaxy! It's Interplanetary Insurance Inc! It's Star Rovers! It's Hawkman! It's Space Ranger! It's Jan Vern, Interplanetary Agent!, it's Ultra the Multi-Alien! And yes, it's freaking SPACE CABBIE! 'nuff said!