The speed limits on the roads of the United States change from location to location. Sometimes the speed limit is 5 mph and sometimes it is 75 mph. If traveling in excess of the speed limit one is liable to get a speeding ticket or a citation for a different offense. Speeding can reduce the gas mileage in a person’s car and can cause an engine to overheat if the speed is too fast and particularly if the climate is very hot such as the southern parts of the United States in the summer. Temperatures can exceed 100 mph and an engine will suffer. The speed limit in school zones is lower than non-speed zones. Racing is always illegal and this applies to American cars such as Fords, Chevrolet, and General Motors vehicles. Japanese brand automobiles include Honda, Toyota, etc. The best places to see the difference of the cars is at the manufacturer or the auto lots where the vehicles are sold. After a vehicle is purchased work needs to be done to make the vehicle faster than it was when you started. This usually means expensive parts that can be purchased online or in person.
When improving a car the budget will depend on each individual person and how much money they have saved or budgeted for the improvements. Usually the improvements make the vehicle perform better at higher speeds and keep up with the other cars that are racing, or are preparing to race.
At night the racing vehicles can be harder to see. The racers try not to draw attention to themselves as the exceed the speed limits.