The witness who videotaped the incident called 911 and was one of those who stopped to help the victim, who was "really in agony" after suffering a broken leg, a bloodied face and road rash on his arms, the witness told KNTV.
The sedan and the group of about 10-15 motorcyclists continue on the highway a short distance until a black auto stops in front of the white sedan, forcing it to stop near the exit.
Cell phone video shows the driver of a white Toyota Camry attempt to pass the group of about 15 dirt bike and ATV riders slowing down traffic on Highway 101 in San Francisco on Wednesday.
Before Alex exited his vehicle, one of the bikers in a red sweatshirt began punching the rear side windows of the Toyota. One motorist tried to get past and that is when the bikers went after him.
Family members said the bikers attacked an innocent man who is mostly disabled by spinal stenosis and osteoarthritis.More news: 'Fearless Girl': New statue stares down Wall Street's bull
It happened Wednesday on one San Francisco's busiest freeways.
Quintana was in fair condition Friday at San Francisco General Hospital, where he underwent surgery to have pins implanted in his left leg. Doctors are waiting for the swelling to go down before performing another surgery. Full video of the fight: A man who was reportedly kicked and punched by the riders was being loaded into an ambulance when officers arrived. "I didn't want to cause any problems". Quintana said police told him they know the name of the gang.
Witnesses to the incident were interviewed and a video showing the altercation was obtained and booked into evidence.
She added: 'I am a Christian, and I am trying not to let my heart feel a lot of hate'. Representatives for the San Francisco-based startup couldn't immediately confirm the victim was an Uber driver.
His girlfriend, Cecelia Dunn, told the Modesto Bee: 'They picked an innocent person'.