DEARBORN, Mich. - Sometime next week, the assembly line at a Ford plant near Atlanta will come to a halt, signaling the end of a family sedan so revolutionary that its 1985 debut changed forever the way cars look, feel and drive. ADVERTISEMENT Say goodbye to the Taurus. After 21 years and sales of nearly 7 million cars, Ford Motor Co. is giving up on what some call the most influential automobile since Henry Ford's Model T. The Taurus is credited with moving America away from boxy V-8 powered gas-guzzling bedrooms-on-wheels to aerodynamic, more efficient cars with crisper handling. To...