Horry County police charged Justin Mitchell Rhems, 17, with Attempted Murder.
Rhems' father said the victim was in the passenger seat and Rhems was in the back seat as they traveled down Bottle Branch Road about 3 a.m. Thursday, according to a police report.
The father said Rhems just started assaulting the victim, so he stopped the car at Oakey Swamp Baptist Church, separated them and realized the victim had been stabbed.
The victim had a cut on his right shoulder and multiple wounds to his neck, the report states. It says he was covered in blood.