Named after the Roman god of commerce and travel, Mercury General hopes to combine the two and become the ultimate auto insurance provider. The company is the parent of a group of insurers, including Mercury Casualty Company, that write automobile insurance for all risk classifications in more than a dozen states. Plain old private auto insurance accounts for a majority of premiums written. However, Mercury General also sells commercial vehicle insurance and a bit of homeowners, mechanical breakdown, umbrella, and fire insurance. The company is a leader in the California auto market and has significant operations in Florida.