If I was more than a half hour from the office, I loaded an old Kodak film pack developing tank in a daylight changing bag, pre-rinsed for 2 or three blocks, pulled over, dumped the water into a can, filled the tank with developer, and drove to the office. When I parked at the office. I dumped the Rodinal dilute developer, water rinsed for 2 minutes, poured out the water (into the bucket) put the hypo in and carried the tank to the art department editors desk. I'd have to leave it on his desk for a minute or two, while I described the action, then dumped it out in the darkroom, put rinse water in it and went back to the editor, and we pulled the photos out to see if they were any good. Well, that was the news racket when I was young!!