Originally Posted by fanboiii
That's not what we're talking about it. >Context<
We're talking about Superman travelling fast around the world in the movie. So no, it's not possible because Superman doesn't have infinite energy nor was he travelling faster than light.
If he did travel faster than light, it would be more probable that a singularity would be created than going back in time.
And what happens in a singularity? Space/Time, or Physics as we know it breaks down... so, it's entirely possible to be travelling back in forth in time (if you don't break apart) inside a singularity...