A car has gone crashing into an alterations shop in Adelaide, with witnesses hailing it a “miracle” that no one was injured.

Emergency crews were called to George Street in Norwood about 11.30am today.

CCTV captured the silver Toyota making a U-turn and swiping three cars before driving onto a footpath on the opposite side of the road.

The car was seen knocking over a street sign and narrowly avoiding two women before it crashed into the alterations shop.

“Very loud, very loud,” witness Sue Duong said.

Witnesses rushed to help the driver, a 46-year-old man from Kent Town, and called for help.

Firefighters worked to free the man, and the car was later towed away. 

The driver was treated at the scene for minor injuries and fined for the crash.

The shop owner told 9News he was inside at the time, but was luckily in the back corner of the store.

“It’s a miracle no one was hit,” Duong said.