Man hit by dad's car in serious condition

A 32-year-old man who was struck by his father's car as he reversed out of their driveway in Perth's western suburbs remains in a serious condition in hospital.

The 71-year-old was backing out of his Claremont garage on Sunday when he accidentally accelerated heavily and hit his son, who was standing behind the car.

After the son was knocked through a brick wall and into a swimming pool at the neighbouring property, his father jumped out to help him, while the vehicle was left dangling over the water.