Doug Brown worked for Enterprise Rent-A-Car and Enterprise Fleets Inc. from 1963 to his retirement in 1993. He started in1963 part-time, then switched to night school and became full-time employee of Enterprise Rent-A-Car in spring of 1964. In 1965, Brown was named manager of a new branch; in 1968, he was Sales Manager; 1969 promoted to VP/; 1972 EVP/St. Louis; 1976 EVP/Corporate; 1979-1993 EVP/Corporate & President of Enterprise Fleet Inc. In 1976-1993, he was additionally named president of various subsidiaries.