Even the Man Of Steel deserves a day off!
But lest you think that this is a typical lying DC cover:
Oh, don't worry, it's just a dream!
See, it's way too complicated, but an alien bunghole has worked some whammy so that, when Kal-El's not wearing the Superman uniform, he's just plain Clark Kent, with no powers whatsoever. Which has caused our hero to have something of an identity crisis about who he is and how he divides time between Clark and Superman. Hence, the dream.
"At least the kite got away..."
From Superman #298 (1976)