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
1991 Australian Endurance Championship drivers competed in the 1991 Australian Endurance Championship and the 1991 Australian Manufacturers' Championship. The 1991 Australian Endurance Championship and the 1991 Australian Manufacturers' Championship were contested concurrently over a two round series with one race per round. Note: Other placings in the Endurance Championship have not been ascertained. Note: Other placings in the Manufacturers' Championship have not been ascertained. 1991 Australian Endurance Championship The 1991 Australian Endurance Championship was a CAMS sanctioned Australian motor racing title open to Group 3A Touring Cars. The championship, which was the eighth running of the Australian Endurance Championship, began on 8 September 1991