A sports supercar was destroyed after catching fire on the A41 near Kings Langley at the weekend.
The white Lamborghini Superleggera was well alight by the time firefighters reached it on Saturday morning.
Rear of the Lamborghini after the fire.
The driver managed to escape from the vehicle, which costs from around £150,000 new, but the back end was left a smoldering wreck.
Witness Emily Tiritti said: "It must have just happened at the time [I took a picture].
"A few cars stopped to get out and a have a look. It was just in flames at the time.
"The driver looked worried."
Ty North, who also saw the fire from the bridge above the A41, said that the flames were visible from nearby Chipperfield.
Both lanes of the northbound carriageway were closed while the fire was extinguished, with lane one remaining closed into the afternoon for the Highways Agency to repair the road surface.
Spokesman for Herts Fire Andrew Dawson said: "We were called at 8.48am on Saturday to a location half a mile north of the M25 on the A41.
"A sports supercar was alight on the roadway. It was well alight when we arrived, firefighters put out the fire.
"No ambulance was required."
Police attended for traffic control measures.
Giles Cooper from Herts Constabulary said: "We assisted in closing the road. Lane two reopened at 9.30am after the fire had been put out.
"We handed over to the Highway Agency at 11.40am for them to repair the road in lane one, where the vehicle caught fire."