On Monday, I was riding my bike on Grand St. when my tire got stuck in the streetcar track and I crashed and banged my head on the ground. You were behind me in your car, but did not run me over. Not only that, but while I was passed out, you called 911 and made sure I was safe until the ambulance got there. I barely even saw you— I think you were a dude with bleached blond hair— and didn't get to say "thank you" before they whisked me away. I got a concussion and sprained my neck and wrist, but all my brains are in place and nothing's leaking or broken. I'm going to be fine, and this is partially because of you. Thank you.