But he boasted to his girlfriend: 'I won't even be going to proper prison'

Harron, who had not even passed his driving test, was jailed for six years

Mr Brown-Lartey's car was torn in two by impact on crash in Rochdale

A teenage driver sent his friends a photograph boasting as he hit speeds of 142mph just 24 hours before he killed a motorist when he drove his high-powered Audi through a red light.

Addil Haroon, 18, posted a photograph on social media site Snapchat displaying the hired Audi A6's speedometer as he boasted of travelling from Leeds to Rochdale in just 11 minutes.

Just 24 hours later Haroon, who had not even passed a driving test, was showing off the same car to friends during a road race when he jumped a red light at almost three times the speed limit - and ploughed into another Audi, cutting the vehicle in half.

Teenage driver Addil Haroon (left) sent his friends this photograph (right) boasting as he hit speeds of 142mph just 24 hours before he killed a motorist when he drove his high-powered Audi through a red light

Victim Joseph Brown-Lartey, 24, a marketing officer who was driving through a green light at the time, suffered massive injuries in the impact and was killed instantly. A police officer at the scene said he had 'never seen such destruction of a vehicle travelling on urban roads'.

Today, Haroon, now 19, of Rochdale was jailed for six years after he admitted dangerous driving, causing death by dangerous driving, causing death whilst unlicensed and causing death whilst uninsured. He was also banned from driving for six years.

Minshull Street Crown Court, Manchester was told the tragedy occurred on November 9 last year after Haroon, who was studying for an NVQ in motor vehicle repairs, acquired the £22,000 2013 Audi A6 which Lisa Boocock, prosecuting, described as a 'trophy car, impressive and a powerful car'.

A friend hired it on behalf of Haroon as he only held a provisional licence and he had been giving lifts to a number of his friends.

One, Muhammed Yasin, received social media and text messages from Haroon boasting about his fast driving and, during a journey on the M62 on November 8, noticed the teenager had his mobile phone between his knees and was text messaging whilst driving.

Marketing officer Joseph Brown-Lartey, 24, (pictured) suffered massive injuries in the impact and was killed instantly

One of the messages boasted: 'Leeds to Rochdale in 11 minutes. Catch me.' Another said: 'Beat this Leeds to Rochdale in 11 minutes. I beat the f****** s*** out of that last night. No mercy.'

'At one point he took a photo of the dash board showing a reading of 140mph,' said Miss Boocock. 'It was 4.20am.

'This photo was made by the defendant whilst driving with one hand on the steering wheel and the other on the camera to take the photo. The photographer shows the engine management warning light illuminated on the dash board.'

Haroon told his passenger their speed and was said to have 'seemed impressed with himself' and Miss Boocock added: 'The prosecution would say this is evidence of the defendant's attitude toward the road and total disregard for his safety and others on it.'

The following day Haroon and friends had spent the day in Manchester city centre,' the court heard.

One of his friends had taken his parents Mercedes for an illicit spin and both he and the driver of a Lexus met up with Haroon at 3.30am to travel in convoy to Ashworth Valley in Rochdale.

Miss Boocock added: 'These were young males behaving very irresponsibly showing off their cars and showing off their driving. When the cars arrived at Ashworth Valley everyone appears to take photos of the Mercedes and the white Audi the defendant was in.'

Haroon then offered to show the Lexis driver 'the roads' and they headed to Halifax but within 20 minutes Haroon was engaged in 'competitive driving and showing off', the court heard.

In the moments before the impact his Audi was seen by a police patrol officer, at 80mph in a 30mph zone past a Texaco garage.

Just 120 metres up the road, Haroon ran through a red light at a junction ploughing into Mr Brown-Lartey's Audi A5 as it passed through a green light.

As people living nearby dashed to help the victim, Haroon's friends, who suffered minor injuries in the impact, tried to get a taxi to take them into Manchester. However, a bystander ordered the taxi driver to stay put.

Haroon ploughed into Mr Brown-Lartey's car, tearing the vehicle in two in the impact of the crash

Later, Haroon sent messages to his girlfriend saying 'I won't even be going to proper prison. It will be the junior place because I am 18. If all goes well it will only be one year.'

He also sent a message to a nurse, telling her he had passed through an amber light and that the accident was the fault of both drivers.

In a victim impact statement, Mr Brown-Lartey's girlfriend Amelia Drogan said: 'He meant the world to me. He was lovely gentle and generous boy and my life will never be the same again. Life feels like one everlasting nightmare from which I cannot awake.'

Joseph's father, Ian also paid tribute to his son, who had a BA in advertising design.

Beat this Leeds to Rochdale in 11 minutes. I beat the f****** s*** out of that last night. No mercy Addil Haroon to his Snapchat friends

He described him as someone always giving advice to friends, with an 'insatiable' appetite for knowledge having struggled with epilepsy at a young age.

Imran Khan, mitigating, said: 'He was at the time a young man and this was his first brush with the law. He is very sorry for what happened.'

A letter from Haroon himself to Mr Brown-Lartey's family read: 'I am sorry for the heart ache I have caused you and your family and what I have put you through. If I could go back and change that happened that night I would do so. I will live with this for the rest of my life and I pray your loved one is in a better place.

'I know sorry will never be good enough for my my actions because I never meant to hurt anyone. I am truly sorry for the pain I have caused.'

Sentencing, Judge Timothy Mort told Haroon: 'Once released from custody you can pick up threads again but the family of Joseph Brown-Lartey cannot.'

Speaking after the hearing, Sergeant Paul Higgins of Greater Manchester Police said: 'Haroon's irresponsible actions have devastated a family.

'He was uninsured, unlicensed and driving dangerously but he paid no heed and sadly, Joseph paid the price for this.