A 19-year-old passenger, also of Portola Valley, suffered a fractured leg, which is why Mr. Boyce is being charged with a felony, said Detective Sgt. Linda Gibbons of the San Mateo County Sheriff's Office. Authorities are not releasing the passenger's name.
Mr. Boyce was taken to San Mateo County jail, but is out on bail, Ms. Gibbons said. The case is now with the District Attorney's Office, she said.
The Sheriff's Office is not releasing an estimate on the speed of the vehicle before the crash, but the car does have "severe front end damage" and the passenger had to be "extricated" by medics from the Woodside Fire Protection District, Ms. Gibbons said.