âThereâs called free circulating DNA, the fetus, some of its DNA gets into the maternal blood and we can actually detect that DNA -- the accuracy of these tests are about 99 percent,â Dr. Abdullah said, âWe can do this test around 10 weeks, so itâs very early in the pregnancy.â.
Daytona International Speedway is 2.5 miles (4 km) long and a 500-mile race requires 200 laps to complete. However, the race is considered official after half its distance (100 laps or 250 miles (400 km)) has been completed.
Traditionally, races are run on oval tracks measuring approximately 0.25 to 2.66 miles (0.4 to 4.3 kilometers). The world's largest governing body for stock car racing is NASCAR, and its Sprint Cup Series is the de facto premier series of stock car racing.