Business up From The ALAN ABRAMS Special to The Jewish News L ast October, 100 years of "tradition" was shattered when W.B. Doner & Company became the first Jewish-owned advertising agency to represent an automobile manufactur- er. Historically, the big car companies have kept their brand advertising at predominantly gentile agencies like J. Walter Thompson, Campbell-Ewald, McCann Erickson and D'Arcy Masius Benton & Bowles. Doner beat stiff competition to snare the $240 million Mazda account. That accomplishment came despite those who questioned Doner's ability to survive after the catastrophic Aug. 4, 1996, fire that destroyed the agency's Southfield office building and virtually all its contents. This month, Alan Kalter, Doner's , Local advertising giant WB. Doner has overcome a disastrous fire to make industry history.