Warning: contains spoilers for Flashpoint Beyond #0!
The Snyderverse is down but not out as a familiar Batman v Superman: Dawn of Justice.
The Flashpoint universe was created as a direct consequence of Barry Allen's ill-fated attempt to travel back in time to save his mother. Allen woke up in a universe in which his mother lived, but countless other catastrophes were created instead: Bruce Wayne was murdered and his father Thomas is a more violent and murderous Batman, the Amazons are engaged in a war with the Atlanteens, and Barry is no longer the Flash and has no superpowers. Together, Barry and Batman attempt to return Barry to his original time and save the Earth of the Flashpoint universe from destruction.
At the end of Flashpoint Beyond #0, Thomas Wayne has continued his life in the Flashpoint universe (and has even attempted and catastrophically failed to created his own Flash). Meanwhile in the prime DC Universe, the real Batman (Bruce Wayne, hears a commotion in the Batcave. None other than Corky Baxter appears, and he's sitting on top of the unmistakable silhouette of the Batmobile from Batman v Superman: Dawn of Justice (and the Batmobile from Tim Burton's 1989 film appears in the background).
Note that this is not the first time either Batmobile has appeared in DC Comics. In Curse of the White Knight #7, Batman is forced to use the Tim Burton Batmobile after all the others were damaged by Azrael. "This one's always been my favorite" Batman its as he looks at the classic Batmobile. The Batmobile from the Snyderverse has appeared as well - but this is the first time that both vehicles are placed prominently in the and not seen as an Easter Egg for eagle-eyed fans of the Caped Crusader.
The reveal of the Divine Continuum (the DC equivalent to Marvel's Sacred Timeline) confirms the existence of alternate realities, and perhaps that's where the Snyderverse Batmobile originates. The Snyderverse is beloved by many DC fans and seeing a piece of cinematic history in the pages of a comic book is a welcome sight. For Batman in the Flashpoint universe, the adventure is just beginning; perhaps he'll even meet up with his son when the story concludes.