there have been a couple after market decal of bats but they might have run into licensing problems with a trademarked trademark. many computers come with a minimally useful program for manipulating pictures and scans and might be able to reduce the size of a larger image taken offline or scanned or a picture down loaded from a camera. that might allow someone to print their own on decal paper without violating trademark and copyright laws.
stripes on the batmobile might best be attempted with a paint pen, which I think are available at crafts stores along with some hobby stores and online retailers, rather than trying to keep a brush straight.
having not attempted that, I can only suggest that it might work.
i did these stripes with a paint pen (sorry, can't remember the brand):
then, a while later, i was looking at pics of the door logos on original Aurora cars. i noticed they weren't real sharp and weren't particularly complicated. i got brave and freehanded the door bats with the same pen:
nowhere near perfect, but if you look at the ones on an original Aurora car, neither are they. besides, it looks good running around the track.
wow! digging that batmobile... dunno if it's the lighting in your picture or the paint you chose, but the red looks almost like it glows, like pics i've seen of the 1:1 car. very cool... and nice touch on the wheel centers.