Six Minute Ferry operated an automobile ferry service across Carquinez Strait on the main highway between Sacramento and Oakland, California. Each crossing near the present Interstate 80 bridge took approximately 6 minutes. As automobile travel became increasingly popular, the company ordered some new steel ferries in 1921. The ferry company went out of business while the ferries were under construction after a March 1922 landslide destroyed the Six Minute Ferry north shore terminal on Morrow Cove in March 1922. Southern Pacific Transportation Company purchased the ferries ordered by Six Minute Ferry and placed them in service between San Francisco and Oakland. The three ferries remained in service on various San Francisco Bay routes until completion of the San Francisco–Oakland Bay Bridge