yeeeahhh... I like apocalypse stuff, and i 'have' imagined that song inspiring an RP before XD hahah

but i'd recommend not going with a 'gaseous infection', unless it's the type that 'turns dormant' or whatever and leaves future infection up to previous victims... considering that the bus is not likely to be an air-tight environment afterall, it'd be impossible 'not' to already be infected.

Otherwise, yeah, i'm interested... i like playing with mutations XD i don't suppose there's a 'mutation without going mind fuck insane' is there? hahah