Katherine, five, and brother Harry, 14 months, died on Wednesday after their pram was hit by an SUV in Cabramatta

Desperate motorists lifting the SUV onto its side to rescue one of the children trapped underneath. The one- and five-year-old were both killed in south-west Sydney crash.

The children aged 1 and 5 were rushed to hospital after the crash in Sydney’s south-west, but both have since died.