The driver of a Toyota Tacoma was killed Thursday on southbound Interstate 5 after slamming into the back of a commercial truck carrying a long trailer, the California Highway Patrol said.
The Tacoma was trapped underneath the trailer after the 4:15 a.m. collision on I-5 just south of Del Mar Heights.
The truck caught fire, and firefighters put out the flames. The driver, a 39-year-old man from Westminster, died at the scene. His name was not released pending notification of his family.
The CHP was investigating the cause of the crash.
This story originally appeared in San Diego Union-Tribune .