Brake tenders are special trucks that help The Fat Controller's diesel engines with heavy trains.
In the 1960's, diesels on the other railway where lighter then Steam engines so when they pulled heavy unfitted trains down hills they would run out of control and wouldn't stop until the track was level, so Brake Tenders were invented to help them slow down and risk having an accident. the brake tenders were out of use in late 1970's as fitted trains became more common then unfitted trains.
The Fat Controller decided that these brake tenders would very useful and purchased several of them to assist his diesel engines.
Yet to Appear!