Simpson speedway president Alan Symons said the spectacular crash during the final heat of the Trevor Podger Memorial event resulted in Mr Williams having to be cut from his vehicle and flown by air ambulance to Melbourne.

An Ambulance Victoria spokesman said the driver, aged in his 40s, was flown to The Alfred hospital with head injuries after the service received a call at 8.41pm Saturday.

Mr Williams was yesterday reported to be in a stable condition.

Mr Symons said in his 30 years in speedway it was the most violent rollover he had witnessed.

“It was just bone-jarringly violent,” he said.

“Wayne clipped the concrete fence at the start-finish line, bounced back onto the track and rode the wheel of Paul Singleton in a heat. Wayne went into a series of violent cartwheels and in turn one hit the pit gate. 

“The impact was to the car’s roll cage. He would have done at least four or five end-to-ends.”

The speedway president said Mr Williams lost consciousness briefly and, when he came to, reported being incredibly sore.

“He was treated on the spot. The top of the roll cage was cut with a hacksaw to extract him. He would have been in the car for 30 to 40 minutes.

“He was conscious and supported at that time but very, very sore. 

“Ambulance officers thought it was a wise move to call in the air ambulance and he was flown to Melbourne. 

“The ambulance officers were last night quite happy with his condition. It was more a precaution.

“Wayne had all his feeling in his fingers and toes but it was rather violent with the car whipping around.”

Mr Symons praised the speedway’s crash crew and fire brigade members for their efforts.