All you need to know about the Comic-Con trailer for Injustice: Gods Among Us is that Batman uses a remote control Batmobile to take out Harley Quinn. Sure, some other stuff happens, but none of it matters because, again, this trailer features A REMOTE CONTROL BATMOBILE TAKING OUT HARLEY QUINN!
Injustice: Gods Among Us will be available for the PS3, Xbox 360, and Wii U sometime next year.