the accident happened in clayton and mitchell caney road and four oaks lane just up block from mount diablo elementary. as henry lee tell us, parents call this a dangerous intersection. >> reporter: the surveillance video shows hit by an suv went on his razor scooter. in the upper left corner, you can see williams helmet moving through the trees. on the right-hand side of the screen, this what suv is heading towards him but can't stop in time. >> this is a very big interception. >> happen 730 friday morning on mitchell cannon yelled and four oaks lane just amount diablo elementary school. kids and parents often cross the street here, like this woman is doing, even though there's no crosswalk. after the boy was hit, neighbor chris callahan rushed outside to help. >> i was basically holding his hand, waiting for people to get his parents to come out, and the school authorities and paramedics and stuff to show up., paramedics in clayton police showed up on the sheen. william was airlifted to children's hospital and oakland. he will stay up there as a precaution. >> reporter: the clayton