i didn't even think about mirrors! i hit one bombing a hill on my skateboard once. i was going in between two lines of cars. it hurt....a lot. i also hit one with my car mirror once on narrow street while another car swerved over onto my side of the road. that was funny. it came inside the car and hit my friend in the head, then landed on my back seat. ironically it was on our way to a skate spot. hmmmm, i think i am safe on my bike from mirrors, it seems they attack me while skateboarding.