Justice League Action Episode 11 Speed Demon Episode Title:Speed Demon.Episode Description:After defeating a magically-enhanced Harley Quinn, Batman and Zatanna encounter Amber and her boss Brother Night who later uses his dark magic to animate and control the Batmobile in the form of a demon car and kidnap Zatanna in the process where she gets bound and trapped in the Batmobile. With the help of Etrigan the Demon, Batman must save her, stop the now-demonic Batmobile, and defeat Brother Night and Amber even when Etrigan the Demon enlists Merlin to help them out by enchanting an ice cream van for a high-speed battle.