all the people going, "it wasn't confusing at all! You're just stupid!" need to stop being so condescending. The ending clearly did confuse people. Just admitting that the movie wasn't perfect doesn't mean it wasn't great. Nolan is actually not infallible. And in a lot of people's opinions, they slightly fumbled the ending.
I know they were trying to trick us into thinking batman was in the ship when it exploded, but for a series that has, to an extent, prided itself on some level of plausibility, this one just left people scratching their heads. Say he ejects at 30 seconds. So the bat goes five miles in 30 seconds? Or he ejects into something that can move him farther away? It's possible, just not super plausible, that's all. Granted, i've only seen it *gasp* once, but they could have edited that scene better.