A speeding driver who was high on drugs when he killed two people by crashing a stolen car into them in Sydney's inner-west has been sentenced to 17 years in prison.

Key points: Raymond Lomas was driving up to 108 kph in a stolen car when he ploughed into a sedan

Raymond Lomas was driving up to 108 kph in a stolen car when he ploughed into a sedan Alex Theodore and Junior Saini had been driving to work when they were killed

Alex Theodore and Junior Saini had been driving to work when they were killed Earlier in the day police chased Lomas from Mosman to Zetland but were not pursuing him at the time of the crash

Raymond Lomas, 34, was sentenced for the manslaughter of Alex Theodore and Junior Saini who were driving to work together around 4:40am on May 25, 2017.

Mr Theodore, 62 and Mr Saini, 49, were killed when Mr Lomas drove a stolen four-wheel drive ute through a red light on the Princes Highway in St Peters and slammed into Mr Theodore's sedan.

In the moments before the collision, Lomas had been driving between 103 and 108 kilometres per hour in a 60kph zone, with crash data revealing the accelerator pedal was pushed to the floor.

Lomas had been chased by several police officers from Mosman on the lower north shore to Zetland south of the city in the hours leading up to the crash.

At the time of the crash police were not pursuing him but remained in the area and were at the scene within minutes.

Mr Saini was trapped inside the sedan and died at the scene while Mr Theodore died later at the Royal Prince Alfred Hospital.

The scene of the crash at St Peters. ( ABC News: Mark Reddie )

Judge Dina Yehia told the NSW District Court Lomas' offending took the lives of "two individuals who were just going about their normal business".

"There has been a crushing and profound loss experienced by the family members of the deceased," Judge Yehia said.

"This manner of driving is an appalling example of driving with complete disregard of the safety of other road users."

'Be a better person', victim's cousin pleads

Outside court, Mr Theodore's cousin, Margarita Vlachos, said she hoped Lomas could be rehabilitated in jail.

"Maybe he can learn in [jail] and do something with his life, so that when he does eventually get out ... he can get a job and do things the right way instead of breaking and entering and killing people innocently," Ms Vlachos said.

"Wishing him more years in jail isn't going to do anything, so if I could just plead with him ... be a better person for God's sake, don't get out and do this stuff again."

Margarita Vlachos, Mr Theodore's cousin, said she hoped Lomas could be rehabilitated in jail. ( ABC News: Mazoe Ford )

Judge Yehia noted Lomas' long criminal record, the seriousness of his offending and his history of drug abuse, saying he displayed a "continuing attitude of disobedience of the law".

His sentence also includes time for a crime spree in the weeks before the crash, which included breaking into homes at Centennial Park, Mosman and Lavender Bay.

One of the homes belonged to pedestrian safety advocate Harold Scruby, who was in court to watch the sentencing.

"This man was a criminal with a career in very, very dangerous behaviour and the courts just kept letting him out," Mr Scruby said.

"When are we going to have a system that puts the community first and the criminal last?

"If this gentleman had been kept inside, two people would be alive today and a lot of people who were very traumatised wouldn't be so."

Mr Saini's loved ones as well as supporters of Lomas were also in court.

Lomas will be eligible for parole after serving 12 and a half years in prison.