A father and his teenage son are recovering after they were rescued in a rollover crash near Arroyo Grande.

It happened at about 2p.m. Monday on the northbound Highway 101 on ramp at Oak Park Boulevard. A mini van and a Mercedes collided for unknown reasons. The van rolled onto its driver's side and trapped the father and son inside for nearly 20 minutes before they were rescued by firefighters.

They sustained minor injuries. The driver of the Mercedes was not injured.