The Seattle Times has a story today regarding a topic I've been following for awhile; mobile slaughterhouses.
My beef farmer has to transport his cattle to a USDA 'inspected' facility to be able to sell his grass fed, all natural beef to me. Ask him how happy he is about this sometime. From what he's told me about it, it really sounds like a hassle, and if the USDA inspector can't be there for some reason, the whole trip has to be rescheduled.
Using something like this, the slaughterhouse would come to his farm.