It will be a big weekend for NASCAR at the Las Vegas Motor Speedway.
It's the 2nd NASCAR event of the year and the speedway is hosting its first ever playoff race on Sunday.
NDOT says they expect 25,000 extra cars on Las Vegas roads this weekend because of the series of races. 100,000 people are expected to attend.
Traffic will be heavier than usual on the roads leading to the speedway.
