2005 S60R: Drove down the road today, thank god only 1/2 a mile, and SOMETHING broke. Loud crack, followed by what sounded like metal dragging on the ground. Nothing hanging. Hobbled back slowly, with a combination of scraping, clunking, loud metal on metal, and popping. Car's a 6 speed manual, 90K. I know I'll have to have it towed, just not sure where. Any ideas on what this is? I jacked up the front end and crawled under to see if there was anything obviously broken; there wasn't.