Superman goes so fast he kills a hundred kittens and blows several large holes through the roof before he's done.
About the glasses thing: when John Byrne did the re-tooling of the Superman origin, there was an explaination that Supe's always vibrated his face so all images of him were blurry. And Clark never stood straight up with his shoulders back.
Hey, its Superman. If anyone could vibrate their face all the time, its gotta be him.
Hmm, I wonder if Lois ever sat on his face...