CCTV footage captured the moment a teenager fled the scene after driving his BMW into a bus stop - seriously injuring a four-year-old boy.
James Doherty, 18, lost control of his car at about 1.50pm on November 17 last year, in the Long Cross area of Lawrence Weston, north-west Bristol.
Doherty's vehicle collided into a bus stop where a woman and her young stepson were waiting and a probe later revealed he had bought the BMW that day.
The boy sustained critical injuries for which he continues to need medical care and the woman was also injured.
Footage shows Doherty's BMW rounding a corner, out of control. It then cuts to a clip of the driver - clad in grey - running away from the scene.
Later that same day he handed himself into police, where he was arrested, Avon and Somerset Police said.
Doherty, of no fixed address, pleaded guilty to one count of causing serious injury by dangerous driving.
At Bristol Crown Court on Friday he was sentenced to two years and two months in a young offenders' institute.
James Doherty (pictured), pleaded guilty to one count of causing serious injury by dangerous driving
Doherty's vehicle collided into a bus stop where a woman and her young stepson were waiting
Doherty ran away from the scene but later handed himself into Patchway Police Station, where he was arrested
He also received a driving disqualification of four years and one month and will be required to take an extended test after it is completed.
His Honour Judge Peter Blair said Doherty drove at an 'inappropriate' speed and was 'utterly cowardly' in fleeing the scene.
He acknowledged that Doherty was a young man and had no previous convictions.
The boy's mother, in a statement to the court said her son's 'innocence and boundless joy was stolen from him the day the accident happened'.
She added: 'He has spent weeks in the hospital fighting for his life and will spend many more trying to get back to the boy we all know.'
The boy's father, who was with the injured pair and a short distance away when the collision happened, said the effect of the incident on the family had been 'indescribable'.
Both he and the injured woman have been experiencing distressing flashbacks since the collision.
She said: 'I would never wish this to happen to anyone. This is a lifetime scar for me and my family.'
Doherty received a driving disqualification of four years and one month and will be required to take an extended test after it is completed
The boy's mother, in a statement to the court said her son's 'innocence and boundless joy was stolen from him'
The boy's father said he has been experiencing distressing flashbacks since the collision
Senior collision investigator David Paniccia-Brown said: 'James Doherty caused horrendous injuries to a young boy and a woman, and then showed no regard for their welfare by fleeing from the scene.
'At the time of the collision we feared the boy would not survive but fortunately he has pulled through, in no small part due to the wonderful care of medical staff at Bristol Children's Hospital and paramedics.
'He will need ongoing medical care, something no little boy should have to go through, as will his stepmother.
'We want to thank the family for the dignity and composure they have shown throughout this upsetting case, the pain of which both mentally and physically will not end with any court sentence.
'We continue to provide them with support through a specially trained family liaison officer.
'We would also want to thank members of the public who helped at the scene in the immediate aftermath of this incident, helping to free the young boy by overturning the vehicle.
'It was a hugely distressing scene but they showed kindness and selflessness in a time of crisis and that should be recognised.'
