Endurance racing (motorsport) these classes continued to embrace the endurance format. Multiple drivers per car was an early adaptation as the rigors of endurance racing quickly overcome the abilities of most racing drivers to compete solo, although solo attempts on 24 hour races like Le Mans would continue into the 1950s. The various endurance formats were appealing to manufacturers, not only as alternatives to the expense of Grand Prix racing, but also because of its increased relevance to road going models. In automobile endurance racing, three events have come to form a Triple Crown. They are considered three of the most challenging endurance
White City, Swansea Greyhound Track the nickname White City. The track was located on the east side of Pen-llwyn-eithin Farm and was west of the Crockett Rail Goods Yard Railway. The track is named as Penllenddan Farm, Swansea on the 1946 betting licence lists and is shown as having a capacity of 2,500 people but the track is believed to have closed around the same time and did not appear on the 1947 lists. The Mettoy (Toys) factory was built in 1948 and covered what was the south part of the greyhound track. White City, Swansea Greyhound Track White City, Swansea Greyhound Track was a