//Originally a commander of chariots for Ahab, king of Israel, Jehu later led a revolt against the throne and became king himself. In the Bible, it is noted of Jehu that "he drives furiously" (II Kings 9:20). In the 17th century, English speakers began using jehu as a generic term meaning "coachman" or, specifically, "a fast or reckless coachman." Today, we are more likely to use the word in reference to reckless cabdrivers. The phrase drives like Jehu is encountered occasionally, too.//