AN OUT-of-control car, careering backwards down Calton Hill smashed into the Gympie Mower Centre yesterday afternoon.
Witnesses at the scene said the noise, as the car punched a 4m hole through the double brick wall, sounded like a bomb going off.
Newly elected Member for Gympie Tony Perrett and his wife Michelle were stopped at the intersection of Young St and Calton Hill and saw the accident unfold.
Mr Perrett saw a white Kia Cerato roll backwards at speed down Calton Hill towards the Fiveways.
As the car gained momentum it veered toward the mower shop and smashed into the brick wall.
Mr Perrett quickly jumped from his car to see if he could help but all of a sudden the car took off in forward direction.
It crossed the busy road and smashed into the rock wall near Young St.
Mr Perrett said he thought the driver had blacked out and automatic locking in the car stopped onlookers from gaining entry to help him.
Eventually the uninjured driver regained consciousness and unlocked the doors.
Gympie Mower Centre employee Sharon Thoroughgood was sorting though chainsaw bars when the car hit the wall.
"It was pretty scary; like an explosion," she said.
"There was a big bang and I saw a glimpse of a car coming though the wall.
"There was stuff falling down around me everywhere, then came the dust."
Owners of the Gympie Mower Centre, Robyn and Ross Honnery, said their building had sustained major damage.
The double brick wall fronting Calton Hill not only had a 4m hole in it but major cracks running the length of the structure.
The Honnerys were planning to go away last night for the weekend but instead had to work out a way to secure their business for the weekend.
Gympie police are still investigating the accident.