NASCAR champion Jimmie Johnson feeling 'much better' after bout with dehydration

Hendrick Motorsports says defending NASCAR champion Jimmie Johnson is feeling "much better" after suffering from dehydration at Richmond.

A spokeswoman also said Tuesday that crew chief Chad Knaus found nothing wrong in the car that would have caused Johnson's dehydration.

The six-time NASCAR champion was assisted to the infield medical center following his ninth-place finish Saturday night. Johnson was lying down next to his car after the race and was helped by his crew to a golf cart.

He spent nearly 90 minutes in the care center and needed 5 liters of intravenous fluids.

Johnson plans to fulfill all his obligations this week associated with NASCAR's promotion of the Chase for the Sprint Cup championship. Johnson has a full slate of media activities planned for Wednesday in New York.