Mr. Nunley said the man's 1997 Cadillac was one of the last vehicles in the parade and the driver might have suffered an unspecified medical problem when his car accelerated to about 25 miles an hour and struck the crowd on a two-lane bridge along the town's main road.
In an incident that left neighbors in a Glendale, California, neighborhood surprised but relieved that no one was hurt, a man lost control of his black Cadillac as he drove down his steep driveway Saturday evening.