Fountain spent in the Peace Corps from 1966 to 1968. By 1973, after returning to the U.S., Fountain earned his Wharton MBA, then landed a job at Chrysler as an investment analyst. By 1995 he was appointed vice president for government affairs, ascending to the position of senior vice president after the 1998 merger of Daimler-Benz and Chrysler Corp. He also oversaw community relations and educational programs as president of the DaimlerChrysler Corporation Fund. Since retiring in 2008 has devoted considerable effort to the Walter P. Chrysler Museum. He is also involved in the Community Foundation for Southeastern Michigan secretary, Detroit Economic Club officer, Hudson-Webber Foundation trustee, United Way for Southeastern Michigan director, Walter P. Chrysler Museum Foundation chair, Invest Detroit director, Africare chair, International Visitors Council of Metro Detroit honorary board member.