He then said that the driver became

This is the horrific moment a BMW driver crashes into a motorcyclist leaving him with a concussion, just seconds after he'd yelled at him to stop using his mobile phone while driving.

Samuel David Ayres captured the entire event on camera as he was turning South onto La Cienega Boulevard in Los Angeles, California and spotted the mobile-using offender.

He warned the driver of the black convertible BMW to stop texting while driving shouting: 'Put down your fu****g phone you're in your car.'

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Motorist: Samuel David Ayres, the biker, captured the driver texting while driving in his black BMW as he was turning South onto La Cienega Boulevard in Los Angeles

Traffic lights: This picture shows Ayres shadow on the ground as the light turns green and the pair drove off

Ayres, pictured, said he has been left paying several thousand dollars for health insurance, along with other costs, like crutches and car rentals. He is attempting to raise funds through public donations

Ayres, pictured, told Yahoo News that 'the driver is likely going to be charged with assault and felony hit-and-run, but, they haven't been table to track him down yet'

But he said that the motorist became offended and can be heard on video honking his horn at him.

Seconds later as the light turns green and the pair drive off, Ayres GoPro camera captures the horrific moment that the BMW driver slams into him.

Ayres can be heard breathing sharply while his bike skids into the middle of the road. The camera briefly pans past a driver parked up and sitting at the wheel of his silver BMW looking on.

Meanwhile a passerby offers Ayres a helping hand to get back up on his feet off the ground. The incident happened on his daily commute in March.

He told Yahoo: 'I was fully in the left lane the entire time. When the driver started getting really aggressive with me.

'He was very busy texting and talking away on his mobile phone. He became visibly angry when I yelled at him to put down his cell phone while he was in his car.

'Even after he honked at me, much to my surprise, I kept my cool... I didn't flip him off or get into his face, however much I wanted to.

'I definitely slowed down to give myself extra reaction time (there wasn't enough traffic to really get away from him right there). I was going probably about 30mph or so... slowed down from maybe 40-ish?'

'Once the light turned green, I proceeded through the intersection, making my turn. Behind me, the BMW driver came flying up behind me very aggressively.

Collision: Ayres GoPro camera captures the horrific moment that the BMW driver slams into him, seen here,

Impact: Ayres said the brutal incident left him with a concussion two hairline fractures in his left shoulder and a broken left foot which will require surgery

Horrific crash: Ayres can be heard breathing sharply while his bike skids into the middle of the road

'After a couple of blocks, he pulled into the center lane to my left and, once he was parallel with me, swerved his car into my lane, knocking both my bike and myself to the ground. Without slowing, the driver took off down the road.

Ayres said the brutal incident left him with a concussion two hairline fractures in his left shoulder and a broken left foot which will require surgery.

Helping hand: A passerby offers Ayres help to get back up on his feet as a man in a silver car watches the entire event

He says that he could barely remember what day, week or month it was. He also claims that he had short-term memory loss and forgot details from the past week.

Ayres told Yahoo News that 'the driver is likely going to be charged with assault and felony hit-and-run, but, they haven't been table to track him down yet.'

He added that as the driver is currently under criminal investigation, he will not be able to go after him or his insurance for any sort of compensation for a while.

And, the insurance on the car, which was not owned by the driver, has a very small amount of coverage for medical and property damage.

He said he has been left paying several thousand dollars for health insurance, along with other costs, like crutches and car rentals. He is attempting to raise funds through public donations.