It's not clear how the metal got loose. Incredibly, no one was hurt in this crash. The driver of the BMW probably feels like the luckiest man in the world today, as he walked away with nothing worse than a minor scratch. If the metal had hit just a few inches to the right his injuries could have been much, much worse. The San Jose Fire urged drivers in their social media post to stay safe out on the roads. Good advice. You never know what will happen.