Kevin Harvick had the best 10-lap consecutive average speed in the second practice for the Sprint Cup Kobalt Tools 400 at Las Vegas Motor Speedway.
His average of 185.329 mph in the No. 29 Chevrolet SS was best of the 13 cars that ran 10 consecutive laps on the track for this session. No. 18 Kyle Busch, No. 48 Jimmie Johnson, No. 55 Mark Martin and No. 16 Greg Biffle were the rest of the top five on this list.