What's amazing about Elysium is the world that director Neill Blomkamp has created for his story.
(Perhaps you've seen this referred to as "worldbuilding" in various reviews and commentary on the film. I don't often use such fancy words. Unless I think of them first.)
The special effects in this movie are truly impressive. As far as computer-generated images have come, there are still far too many instances in which it's clear that the actor and the monster or superhero or flying object don't really occupy the same space.
Sometimes, the pixels are just a little too apparent. Often, there's a "weightlessness" to the effects. You can just tell that's not really a human being jumping or a car crashing to the pavement.
That is most certainly not the case in Elysium. The shuttles and robot police officers look incredibly real, much like the prawns in his Blomkamp's first film, District 9. I was surprised at myself for how impressed I was simply by a shuttle car lifting up off the ground and moving through air space. Everything — the light reflecting off the surface, the dirt and corrosion, the exhaust it emitted — looked much like a car you'd see on the road next to you.
Now maybe there was a real shuttle car and it was lifted in the air by a crane, and I'm just a goober too easily impressed by shiny, flying things. But this has been a summer in which we've seen a lot of shit flying around and being torn down at the movies. So is it a surprise that a quieter CGI moment got my attention?