its very doable . in most cases we need the part in our hands to scan and then draw on the computer to make the decal. in some cases we have had customers scan things and send us the file and are able to make the decal . if your going to try this scan it with a pennie then print a pic and compare the pennie to confirm its the same size as a lot of times scanners resize images .
also keep in mind the stickers and decals dont stick well to most dash surfaces . mostly because of whats used to clean them and often times because what they are made out of.
all that being said. im always open to new product ideas and new products so anything is worth looking into