What was this comedy short?

I'm trying to remember a short comedy one off that I saw on the telly in the late 70s or early 80s.The scenario was a chauffeur who was wheeling his employer ,a rich old man in a wheelchair in I think maybe a park.The old man is reading a newspaper and somehow the wheelchair starts rolling down a hill by itself.The chauffeur,who is dressed in a uniform chases after him.All this time the old guy keeps reading his paper and is unaware of whats happening.My memories of it are pretty hazy but by the end of the short the old lad is in a limo and the same thing happens again it rolls off down a hill with the chauffeur chasing after it. It had a kind of Benny Hill feel to it with no dialogue and kind of speeded up action.I'm pretty sure it was a one off along the lines of "The Plank" and not a sketch from a series.I saw it on RTE but I'd say it was British.Anyone know what it might be?