Actually, the name is pretty neat; hope it does not have to be changed because of the comic book. (copyright protection - reason).
Well, if they ever do get sued, the comic's authors will have a hard time explaining THEIR copyright violation: in 1991, there was a movie bearing the same title. =)
[edited]
Btw, regarding the future setting of the subj: I believe, Mashimo ain't sure himself where it's gonna take place, Mexico or South America. %) I mean, Gazth-Sonika, as we all know, is allegedly located in south-western Asia, however, AFAIK geography, there are no such lush jungles in that part of our sorry planet, just the deserts and highland plateaus... Meaning that they deliberately wanted to create a mix of the Gaza Strip and, say, Vietnam.
Same here: judging by all that witches and DNA modification talk going on, Mashimo isn't gonna confine himself within the objective reality boundaries again and create a fictional country that'll incorporate FBI, Mexico, Latin America, and Peruvian music culture. %)