Now in it's 23rd year, the Woodward Dream Cruise classic car event is held annually on the 3rd Saturday of August along a 16-mile stretch of legendary Woodward Avenue.  An estimated one million visitors attend the one-day celebration featuring more than 40,000 custom, collector and muscle cars.  It has evolved into the world's largest one-day automotive event.  Although the primary event will be held this year on Saturday, Aug. 19, related festivities will be held in the area from Thursday though Sunday.