Only lasted a summer. Got to be a bit of a drag and - believe it or not - there was pecking order and politics among the drivers! Blew my mind, but I suppose everyone wants what ever little bit of power they can get. The "leader" (because he'd been doing it the longest) INSISTED that we stay together rather than driving a sensible speed with traffic and show up within a few minutes. SO, tail-end Charlie was either on the brake, so as not to run up next-to-last's tail pipe, or flooring it to try to catch up. The leader never used cruise control nor seemed to try to go a constant speed. If he could, he'd go just as fast as he could and we were all supposed to try to keep up. I'm sure from the air, it would have looked like a snake which had just swallowed a meal and was then set upon by a bigger snake.
BUT while it lasted, it was a nice diversion so I'd say "Fun job" but YMMV.