When I read Sapphire's lovely post about 'Cosmos flowers and the Kururi Line', I promised in my comment to show a few photographs of 'Molly', which I took in Heiligendamm.
Tetchan, I learned from Sapphire, are Japanese rail fans.
In 1886 Friedrich Franz III, Grand Duke of Mecklenburg, granted a concession to build a narrow-gauged rail, which run from Bad Doberan to Heiligendamm, first only in summer. Later they enlarged the route and even added freight traffic to Rostock, which was not a success because of its narrowness, so they gave that up in 1969. 13 trains a day were driving.
Today it is still used, in high season at hourly intervals, otherwise every two hours, driving between Bad Doberan via Baltic Spa Heiligendamm (where it became famous at the G8 summit, being the only medium of transport for the journalists) to the Baltic Spa Kühlungsborn.
It is called 'Molli' now (but the gender is male, it is surprisingly 'der Molli', a HIM).