Yes, 1959, started with Fred Chappell at Batley, 4 wheel Commer tipper, TS3 engine, 8 loads a day from Roundwood Colliery (Ossett/Wakefield area) to Tingley gas works. No tacho in those days, just a log sheet usually filled in on Friday afternoon. 
Then one day Fred said “no Tingley job tomorrow Brian, Leeds Fireclay and load for Port Talbot”…“Eh”? 
well I did the job, got a return load of Phurnacite from some long forgotten pit up some South Wales valley somewhere and I set off back the following day over the Brecon Beacons (no motorways), nearly had a soiled underwear situation when the TS3 decided to decoke itself, I was only a young lad, I’d no idea what was happening, thankfully an old driver stopped when he saw me just looking at the Commer …“ah, it’s OK lad, off you go and give it some boot”
That incident caused much merriment when I told the tale back at Batley, Fred just said “you should have thrashed the a rse off it when you first saw the sparks”
Happy days.