A ferocious car fire shut the road between South Cerney and Cirencester.
Chris Cleal saw what happened and took these dramatic pictures.
The occupants, who are believe to be in their twenties, escaped unhurt, he said.
Mr Cleal said the fire began with just small sparks under the car.
The driver, was from Gloucester, and was accompanied by a female passenger.
The fire brigade extinguished the blaze.
10pm: Traffic is currently slow on A419 Swindon Road eastbound between Kingshill Lane and A417 near the garden centre.
Police are on scene.
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