Police in Maryland say this was just the start of it: A 1997 Ford Crown Victoria, traveling in front of an officer early Friday morning, veered off a highway and struck a large traffic sign in Montgomery County. Next: A wooden support post from the sign became impaled in the Ford’s front windshield, sticking up and back more than five feet, like a misplaced lance. Yet the driver kept going, refusing to stop even as lights and sirens flashed behind him. “He was lucky no one was killed,” said Officer Rick Goodale, a Montgomery police spokesman. The driver, Omar Rasharn...