Batman Store Bundles being added to Rocket League Credits Rocket League for the length of the Haunted Hallows and this is what you really want to know.

BATMOBILE DLC - Three Batman Store Bundles show up
During the Haunted Hallows Halloween occasion, you'll have the option to get three Batman Store Bundles with Rocket League Credits.

Michael Keaton's Batmobile from 1989's Batman will be accessible with a Reel Life Decal and a Goal Explosion. Also, Christian Bale's Batmobile Tumbler will be accessible with a Reel Life Decal and a Buy Rocket League Items Goal Explosion.