"Sherlock Comic" (t-shirt) by HareBrained
"Holmes Family Crest" by SyntheticPH
"Exterminate" by ElectroLED
Anyway, that Davros Hotrod piece up there by Psychobilly Tee, nominally a reference to Big Daddy Roth's distinctive art style, reminded me of CARtoons. I don't imagine that there's much of an overlap between Doctor Who fandom and Kustom Kulture - this might be the sum total to date.