The title of this article is conjectural as this subject has no known canonical name in the DCEU.
The Jokermobile is the Joker's personal automotive vehicle and primary mode of transportation. It is a Lamborghini Aventador Coupe with a Vaydor body kit.
In 2014, the psychopathic duo, Joker and Harley Quinn, drive down a Gotham City street in their Jokermobile, laughing maniacally. However, Batman pursues them in the Batmobile, and after putting his car on auto-pilot, he leaps onto the Jokermobile's roof.
Harley, annoyed that Batman was ruining "date night", begins angrily shooting through the roof. However, due to Batman's bulletproof suit, this proves ineffective. Joker, attempting to shake Batman off, makes a sharp turn that sends his car flying off the road and into the river, forcing Batman to grapple away.
Batman then promptly puts on a breather and dives into the river, finding the crashed car and Harley, but no Joker. Batman then grabs Harley, who awakens and tries to stab him, but Batman quickly knocks her unconscious with a mighty punch, and carries her out of the river.