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
X Motor Racing transmission, damage model and tire model are customizable in the Vehicle Physics utility. X Motor Racing X-Motor Racing ("XMR") is an indie racing simulator developed by Russian studio Exotypos. The game features high precision physics simulation, online multiplayer and open architecture. Featured is a fully customizable physics model — the tire model, suspension, or motor are available to tune in the game, including an advanced tire model with adjustable parameters, such as temperature and tire grip. "X-Motor Racing" has an advanced graphics engine, supporting True HDR rendering and FSAA. "XMR" SDK allows exporting all in-game physics data to build a