I just read a preview of Quake Wars in this months edition of PC Gamer(uk) in it they claim that the Buffalo is a NPC vehicle that is used to bring you into battle instead of randomly spawning.
Here is the extract:
This troop transport is an NPC vehicle used to get respawning players into the thick of things. Quake wars doesnt dump you back at base and leave you to make your own way to the frontline, but nor do you magicaly pop out of nowhere at a spawn point. Its a neat trick to maximise the time you spend having fun without breaking imersion.
I cant remember reading this anywhere, has it been confirmed or are they speculating?



