I was riding here in SF last weekend at 18+mph, when a guy clipped me hard with his side mirror going probably 25-28. I sort of spun and fell backwards against his car before tumbling to a stop. In the process he managed to run over the very edge of my foot. Thanks to my PPE, the only result was a scrached helmet, some torn fabric on my gloves / backpack / jacket, a badly bruised pinky toe, and a hoarse voice from yelling at the guy for a few minutes.
The board is fine other than some scratches.
Wear a helmet guys. It has already saved my life / saved me from serious injury 3 times in 1500 miles.