Story highlights Two men did not live long after the Porsche crashed and caught fire, report says

"For unknown reasons, the driver lost control of the vehicle"

Paul Walker was passenger

The Porsche carrying "Fast & Furious" star Paul Walker was speeding at more than 100 miles per hour when it crashed in November, killing the actor and a friend, according to the final coroner's report on the deaths.

The 15-page report released Friday by the Los Angeles County coroner's office answered several questions that had been the subject of speculation about how Walker and racing team partner Roger Rodas died.

The two men apparently did not live long after the high-performance 2005 Porsche Carrera GT , which was traveling at "approximately 100+ mph," slammed into a light post and tree and burst into flames, the report said.

Walker, who shot to fame as star of the high-octane street racing franchise "Fast & Furious," was in the passenger seat of the car driven by Rodas.

Walker, 40, and Rodas, 38, left a charity event at a car shop co-owned by the men to take a ride in an office park in the community of Valencia in Santa Clarita, about 30 miles north of Hollywood. The crash happened a few hundred yards away on a wide street.

Photos: Paul Walker: Life in the fast lane Photos: Paul Walker: Life in the fast lane Paul Walker, a star of the "Fast & Furious" movie franchise, died in a car crash on November 30, 2013. He was 40. Here's a look at his career through the years. Hide Caption 1 of 15 Photos: Paul Walker: Life in the fast lane Walker with Tyrese Gibson, Michelle Rodriguez and Ludacris in "Furious 7," which had mostly completed filming when Walker died. Many fans got emotional upon seeing Walker onscreen in the movie, which earned $143 million its first weekend. Hide Caption 2 of 15 Photos: Paul Walker: Life in the fast lane Walker's role as Brian O'Conner in the "Fast & Furious" franchise (here with Vin Diesel in the sixth film) helped make the actor a star. Hide Caption 3 of 15 Photos: Paul Walker: Life in the fast lane Walker and Jordana Brewster -- who played his love interest, Mia, in the films -- in "Fast 5." Hide Caption 4 of 15 Photos: Paul Walker: Life in the fast lane Kevin Rankin and Walker appear in "Pawn Shop Chronicles," a 2013 film about a missing wedding ring that sets off a wild goose chase. Hide Caption 5 of 15 Photos: Paul Walker: Life in the fast lane Walker also had a starring role in the 2013 film "Hours," about a man trying to keep his daughter alive after Hurricane Katrina. Hide Caption 6 of 15 Photos: Paul Walker: Life in the fast lane The actor was part of a band of thieves in the 2010 movie "Takers." Hide Caption 7 of 15 Photos: Paul Walker: Life in the fast lane Brooklynn Proulx and Walker in the 2008 film "The Lazarus Project." Hide Caption 8 of 15 Photos: Paul Walker: Life in the fast lane Walker, left, and Barry Pepper were U.S. Marines in the 2006 drama "Flags of Our Fathers." Hide Caption 9 of 15 Photos: Paul Walker: Life in the fast lane Walker appears in the 2005 action film "Into the Blue," which also starred Jessica Alba. Hide Caption 10 of 15 Photos: Paul Walker: Life in the fast lane Tyrese Gibson took over for Diesel opposite Walker in 2003's "2 Fast 2 Furious." Hide Caption 11 of 15 Photos: Paul Walker: Life in the fast lane Walker appeared in 2001's "The Fast and the Furious," the first movie in the franchise. Hide Caption 12 of 15 Photos: Paul Walker: Life in the fast lane Walker, center, appeared in "Skulls" with Leslie Bibb and Joshua Jackson in 2000. Hide Caption 13 of 15 Photos: Paul Walker: Life in the fast lane Walker and Freddie Prinze Jr. co-starred in the popular 1999 teen film "She's All That." Hide Caption 14 of 15 Photos: Paul Walker: Life in the fast lane Walker's first major role was opposite Reese Witherspoon in the 1998 film "Pleasantville." Hide Caption 15 of 15

"For unknown reasons, the driver lost control of the vehicle, and the vehicle partially spun around, and began to travel in a southeast direction," the coroner's report said. "The vehicle then struck a sidewalk and the driver's side of the vehicle struck a tree and then a light post. The force of those collisions caused the vehicle to spin 180 degrees, and it continued to travel in an easterly direction. The passenger side of the vehicle then struck a tree and the vehicle burst into flames."

JUST WATCHED Report: Walker going 100+ MPH in crash Replay More Videos ... MUST WATCH Report: Walker going 100+ MPH in crash 01:21

Video obtained by CNN from a security camera posted on a building on the opposite side of the street from the crash suggests that the fire that engulfed the Porsche did not erupt until about a minute after the car crashed.

In the video, which does not show the car, black smoke is seen rising from the crash scene 60 seconds after the light pole and a tree fall. Smoke is faintly visible above the scene after one minute, followed by a heavy plume of black smoke after two minutes.

The autopsy revealed "scant soot" in Walker's trachea, suggesting his life ended before the smoke and fire engulfed the car.

The actor's body was badly burned "and in a pugilistic stance. His right wrist was fractured and his left arm was fractured," the report said. Rodas was also described as in "a pugilistic" -- or defensive -- position.

Walker suffered fractures of his left jawbone, collarbone, pelvis, ribs and spine, the report said.

Rodas "rapidly died of severe blunt head, neck and chest trauma," the report said.

Investigators from the Los Angeles County Sheriff's Department met with engineers from Porsche to analyze the data-retrieval system in the car's computer, the department said last month. That system is used to shed light on the car's speed, throttle opening, air bag deployment, seat belt use and, possibly, other information from the time of the crash.

The coroner's report did not conclude whether the men were wearing seat belts.