SAN DIEGO -- A collision between a box truck and a Tesla backed up traffic on the freeway.
The crash happened around 4:15 a.m. Sunday on Interstate 805 southbound near the Balboa Avenue exit in Kearny Mesa.
For unknown reasons, a Tesla and box truck collided, the California Highway Patrol incident log indicated. The box truck hit the center divider, breaking off parts of it. The truck's front axle broke off on the divider and was still there hours after the crash.
Chunks of concrete and other debris in the freeway lanes caused other cars to crash, including a black Kia Sorrento, the CHP added.
The driver of the big rig was transported to Sharp Memorial Hospital with unknown injuries.
The highway was shut down as crews removed debris from the lanes. Traffic was backed up in both directions on I-805 near the Balboa Avenue exit.
By 6:03 a.m., one northbound lane was reopened.
It was unclear how many injuries there were in the collision.
The cause of the crash is still under investigation.