In the first races of the NASCAR, the usual stock cars participated. Every team tried to adjust the car to boost the speed on the track. Today, 8-cylinder engines of NASCAR cars with over 750 hp mainly run on oval tracks, though two Nextel Cups are held on the usual ring tracks – Infineon (former Sears Point) and the international circuit Watkins Glen. The NASCAR track length is from 0.5 miles at the circuit Martinsville to 2.7 miles in the longest Superspeedway Talladega. The average speed is about 188 mph. The figures ending the name of the NASCAR race show the number of laps, miles or kilometers.
The NASCAR holds various competitions, but the main ones – Bush, Craftsman Truck series with the Nextel Cup being on the top. Formerly the Grand National, or Winston Cup, Nextel Cup gathers more than 40 best drivers, competing in 36-stage series. The Bush is the second major in NASCAR. Many drivers successfully performed in this series get an opportunity to take part the Nextel Cup. The Craftsman Truck left the demonstration races and the Supertruk series in 1955. Pilots participate in racing in specially adapted wagons at distances from 149 to 248 miles.
Rules for pits
Leading NASCAR racing cars consume about 1 liter of fuel per a mile. They are adjusted for higher speed rather than saving. Fuel tanks are getting empty very quickly, and in a regular race, drivers have to repeatedly enter the pits to refuel, change tires and for minor repairs. The pits place is determined in the qualifying race: the most convenient box is chosen by that which gets the pole position. Seven mechanics jump over the wall and work like machines. The replacement of tires and refueling take approximately 15 seconds. Each inspector of NASCAR controls two boxes. They determine whether a stop was made in line with the rules. The driver may be punished by a 15-second delay in boxing before resuming the race if the mechanics jumped too early.