A speedometer, gas gauge, brakes, and doors are all standard features of an automobile. But there is nothing like it in NASCAR. To get into the driver's seat, you'll have to leap out the window. It will cost $70,000 with all of the options (anti-lock brakes, air conditioning, fuel injection, and front-wheel drive). The car comes with four wheels and an engine, but that's about all most people would know it by. Because there are two types of cars in NASCAR: stock cars and modifieds. Stock cars are the race-prepared vehicles driven by drivers looking to score points toward their season-long championship. They're based on production cars with added safety equipment and less horsepower. Modifieds are similar to stock cars but with additional cosmetic changes for looks. They're driven by drivers looking to make an impression or show off their custom paint jobs. Both stock and modified cars are prepared for racing by their owners before they hit the track. They may receive minor adjustments such as changing tire pressures or adjusting the suspension settings. But other than that, they're left alone until they come time for practice on the day of the race. Practice sessions are when drivers learn the layout of the track and work on their braking zones and passing lanes. The more practiced drivers will be able to translate that knowledge into better times during the actual event itself.