The white Toyota Camry collided with the pregnant girl's Mazda at an intersection with Decrease North East Highway in Highbury, sending each automobiles hurtling into a 3rd car.
"That white automotive got here flying over the verge, airborne on its facet, and hit that automotive," a witness stated.
Witnesses rushed to assist the lady who known as her husband — who was isolating with COVID-19 — for help.
The girl's husband known as his father as emergency providers arrived on scene.
"I simply knew the automotive had been smashed however we did not know the way massive this accident was," father-in-law James Blagg stated.
The 31-year-old and her unborn child survived the ordeal and have been taken to the Flinders Medical Centre to be assessed.
The 41-year-old girl driving the third automotive was unhurt.
Police alleged the Camry had been stolen throughout a break-in three days in the past.
A police chopper was deployed to seek for the suspects, who have been allegedly seen working in reverse instructions in Highbury.
Police arrested 30-year-old man from Ingle Farm and a 23-year-old girl from Goodwood and stated they have been anticipated to be charged.