From their website:
InterState Oil Company was founded in 1970 by the Andrews family in Sacramento, CA. Over the past 40 years, we have consistently expanded our coverage area throughout California and Nevada, and brought on more than 200 friendly and professional employees so that we may provide the highest level of customer service imaginable.
InterState Oil Company remains owned and operated by the Andrews family, who believes that the true strength of the company comes from the people within, who are all considered part of the family.
InterState Oil Company is committed to providing the absolute best experience in the industry, and it shows in everything we do. We are committed to making your business a success, and we believe that the development of a partnership with our customers provides the strength and stability to mutually succeed.