Bristol Motor Speedway Goes Dirt for NASCAR's Next Gen Car.

NASCAR teams are moving closer to a day when a crew chief doesn’t have to be at the track for a race or even a weekend. This weekend’s race on the dirt at Bristol would have been a good time to have done so, but no Cup teams plan to purposely keep their crew chiefs at home. NASCAR made changes to the Rule Book on Thursday after the confusing actions by the National Motorsports Appeals Panel in separate appeals recently. Cautions are down 28.1% this year compared to this time last season.