I've really had to stretch a point today to find any public transport that I haven't done before. I'm having to hope Ivor the Engine did carry passengers.
Ivor the Engine was a children's TV programme during the 1970s, based on a book published in 1962. The Royal Mail recently published a series of stamps commemorating children's TV, this being the PHQ stamp card of one of the 12 special stamps.
In a later incarnation of Ivor the Engine, a locomotive was adapted to look like Ivor and appeared at a number of heritage railways. These are railways which were once closed down but then reinstated, repaired where necessary and run by volunteers. I used to live near the Watercress Line in Hampshire where Thomas the Tank Engine was a frequent visitor but I never did see Ivor.
This is a post for Sunday Stamps, now hosted by Violet Sky at "See it on a Postcard!"