Maybe I'm wrong but, Isn't this someones design?

[EbonyGT4me]

Yeah, this guy is sellimg t-shirts with this design on e-bay. I could have my head up my arse on this one but, I could of sworn I saw someone with this design in their sig. Anyway, just thought I would throw that out there. I know I'm probably dead wrong though
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=1660047146

[Supralicious]

There's actually an artist who does those drawings and you can buy t-shirts from Speednation with those drawings on 'em. Someone from this board just borrowed that graphic for their sig.