I’ve been seeing a fair amount of criticism of the holding that the Batmobile is a copyrightable character. Still, a good decision to work through.
A seemingly less controversial holding might have been to treat the Batmobile as a protectable aspect of the Batman character. See New Line Cinema v Russ Berrie, 161 F. Supp. 2d 293 (SDNY 2001) (protection extended to fictional character Freddy Krueger’s glove)
The title might be obscure. Go Google ‘Robin’s Holy Sayings’ or something like that.