A man has been sentenced to 11 years in prison with a further five on licence for the manslaughter of ex-Royal Marines Sergeant Major Andrej Szaruta.
Tarkan Agca knocked Mr Szaruta "high into the air" after hitting him with his BMW during a road rage incident on the A303 near Stonehenge in Wiltshire in June 2019, causing him to suffer a fatal head injury.
Tarkan Agca, 24, of Watford, Hertfordshire, entered a plea of guilty to manslaughter last month.
Sentencing Mr Agca at Winchester Crown Court, Mrs Justice May told him: "You drove at him, in effect using your car as a weapon, causing him to suffer the injuries that led to his death, all in the sight of his family."
The judge added that she considered Mr Agca a "dangerous" offender and said he needed to address his "serious anger management issues".
In addition to his sentence, Mr Agca was banned from driving for 10 years and four months and ordered to take an extended retest.
Kerry Maylin, prosecuting, told the court how Mr Szaruta was travelling with his wife, Susan, and daughter, Rachel, in his silver Mercedes along the A303 near Stonehenge in Wiltshire, heading to London for a Father's Day and birthday celebration with their son, Christian.
She said that Mrs Szaruta described how Agca, 24, "tailgated" behind them prompting her husband "to tap his brake to indicate the BMW shouldn't be so close".
Mrs Szaruta said the BMW then undertook them before "squeezing" in front of them before braking so hard that it was like an "emergency stop".
Ms Maylin said the two drivers then pulled over to a slipway by the A303 Solstice Park services and Mr Szaruta walked over towards the BMW where he was hit by the car and thrown into the air.
Ms Maylin said Mr Szaruta died later in hospital from a head injury.
Anthony Berry QC, defending, said Agca was "deeply remorseful" and explained that he came from a background where he was "beaten with planks of wood and pool cues" from the age of five by his father.
The victim's family said in a statement released after his death that Mr Szaruta was "a Sergeant Major in the Royal Marine Commandos for 22 years, gaining medals for serving in the Falklands War, two tours in Northern Ireland, and a NATO medal during the Bosnian war".
Cover image: Police image of Tarkan Agca (Wiltshire Police).