The child’s dad, Steven Arthur, 34 and mum, Gemma Cosgrave, 37 were killed in the head-on collision with the truck on the Bruce Highway at Conn Creek, north of Townsville, on Tuesday afternoon.
The eight-month-old, who was strapped into a child safety seat, was pulled from the burning Subaru wreck, which burst into flames on impact.
Senior Constable Russ Parker says the boy was lucky to be alive.
“To survive a head-on collision at those sort of speeds, given the vehicles involved, that’s amazing,” he told reporters on Wednesday.
Senior Constable Parker said rescuers had shown “absolute bravery and courage … to overcome (the) flames” to save the child.
“It’s a fantastic effort.”
The boy was taken to Townsville hospital, where he remains in a stable condition.
Senior Constable Parker said initial investigations suggest the car may have moved into the path of the truck.
The Courier Mail reports the couple’s other son Phoenix, seven, was not in the car at the time of the crash and was being cared for by friends.
The victims have been remembered by friends as a “wonderful couple”.
Jasmine Porteous, the general manager at Castaways resort where Ms Cosgrave previously worked as a restaurant manager told The Courier Mail:
“She loved those kids and loved Steve with all her heart.
“She was a very hard working, personable, friendly personality and very dedicated to her job.
She described Steven, who previously worked for a local skydiving company, as a “wonderful father and dedicated partner”.
The couple are among 92 Queenslanders killed on the state’s roads in 2019 and follow a horror last 10 days when 19 people died.
Police have appealed for witnesses and anyone with dashcam footage of the silver Subaru Forrester station wagon involved in the crash.