Two people managed to swim to safety after the Lamborghini they were travelling in hit the central reservation and collided with another barrier before ending up in a fishing lake.
The white Lamborghini was travelling from Thrapston to Wellingborough along the A45 when it went into the Higham Ferrers Fishing Club lake opposite Wharf Road, just after 1pm on Christmas Day.
Police received two reports of the accident, one from a passer-by and one from the woman travelling in the car.
A spokesman for Northamptonshire Police said: “The vehicle collided with the central reservation barrier and then hit the barrier at the side of the lake before going into the water.
“It went into the Higham Ferrers Fishing Club lake.
“There were two people in the car, a man and a woman.
“They both got out and swam to safety while the car sank.”
The police spokesman said the man and woman were given blankets by passers-by to keep warm after getting out of the water.
The spokesman said police, fire, ambulance and the Highways Agency attended the call, and added: “We had to close off the roads for a bit so the Highways Agency could fix the barrier.
“All the barriers were fixed by 3.30pm.”
The Environment Agency was also informed about the incident.
These pictures taken by Northants Telegraph reader Richard Gell show the car being removed from the scene several days later at about 10.30am on New Year’s Eve.
One lane of the A45 was closed to allow the recovery to take place.
The extent of the damage to the vehicle, a luxury sports car from Italy which usually costs a six figure sum, is not known.