A car and a school bus with no students on board collided in San Diego's Allied Gardens neighborhood, San Diego Police (SDPD) confirms.
The collision happened at approximately 2:11 p.m. Thursday near the intersection of Navajo Road and Waring Road.
Prior to striking the bus, a 2004 Cadilliac STS was heading northbound on College Avenue toward Navajo Road when it lost control and struck an embankment on the right side of the road, SDPD Sgt. Michael Tansey said.
The Cadillac continued northbound through the intersection of College Avenue and Navajo Road, where College turns into Waring Road, and rear ended a 2008 Toyota Corolla.
The collision sent the Cadillac off the left edge of the road, over the center median and into oncoming traffic. It then struck the side of a San Diego Unified School District bus traveling southbound on Waring Road.
The driver of the Cadillac, a 65-year-old male, suffered several serious injuries including a fractured neck, compound fractures of his right tibia and fibula and sever internal abdominal bleeding.
He was transported to Sharp memorial Hospital and is in grave condition, according to SDPD.
Drugs or alcohol are not considered to be a factor in the crash.
The driver of the Corolla, a 44-year-old female, and the driver of the school bus, a 54-year-old male, were both uninjured.