Richard Childress admitted that Dale Earnhardt Sr.'s iconic No. 3 car had almost a different scheme, with blue being the main color.

Carol M. Kopp edits features on a wide range of subjects for Investopedia, including investing, personal finance, retirement planning, taxes, business management, and career development.

Frequent muscle spasms or trauma to the suboccipital muscles, like from whiplash after a car accident, can also cause strain and inflammation that results in pain at the base of the skull.