Le Mans races are different because they focus on endurance. Instead of drivers racing for a few minutes at a time, teams of a few drivers switch off navigating the same vehicle for an entire 24-hour period. The team who completes the course the most successfully wins the race. The main Le Mans race is held the second weekend of June, in Le Mans, France. Drivers have to be invited to participate, and then pass a series of different qualifying tests.
Formula one racing dictates different characteristics that the cars have to meet. Cars have to be a certain weight and shape, and the engine components have to meet certain requirements. This formula is created in order to make the race fair between participants, and to limit the amount of risk that the drivers could be exposed to during the race. Formula one cars are the most powerful vehicles in the world, as each component is specifically designed to endure the rigors of racing.
If you have ever wondered why some races are covered in company advertisements, it was probably because they were NASCAR cars. NASCAR stands for National Association for Stock Car Auto Racing, and the cars are similar to the makes that you can buy at dealerships. The difference between these cars and normal sedans is that they are specifically tweaked in order to race. Cars have special safety features in order to help the driver to avoid dangerous situations, such as an engine kill switch.