Marlton wrote Rez the developer of Zombies said there is a second Bus! So Yeah there is!

The question asked was "is there something after the achievement, like a second bus route or in game reward?" they never specified if this is the case now or if there is a dlc being released that will make more steps available who knows the only thing we know for sure is trey arch loves this kind of stuff, that is having us bust our balls for nothing, starting with ascension. I hope there is something but knowing the zombie staff this is just hype