Jeff, just what constitutes a "Fast Run" in your book? When I started firing Diesels back in the 70's I had an old Driver who often said he was going to "have to" make a "Fast Run" back home from changeover...all of 2 km/h over the speed limit haha!
Another Driver later on showed me what a real "Fast Run" was with the speedo needle all the way around as far as it would go.