A red car which police believed was used in the abduction of Surrey schoolgirl Milly Dowler has led to fresh appeals in the murder inquiry.
The car is believed to be an N-registration Daewoo Nexia
The vehicle was seen on CCTV near Walton-on-Thames railway station less than 100 yards away from where the 13-year-old disappeared in March 2002.
Det Ch Insp Brian Marjoram said a recent development uncovered the lead.
However, the case is not being formally linked to other murders including the death of student Amelie Delagrange.
Milly was a mile away from home when she was seen by a friend at a bus stop.
Her body was found in woods six months later.
The new appeal comes after images of the car were enhanced by FBI experts in the USA.
THE HUNT FOR MILLY'S KILLER
11,584 lines of inquiry followed up
4,288 statements taken
6,183 telephone messages taken
127 searches conducted
2,885 people questioned in house-to-house inquiries
47 officers and police staff still working on the case
Source: Surrey Police
CCTV footage shows the car, thought to be an N-registration Daewoo Nexia, parked in the street and later driving away with apparently one person inside.
Police say the vehicle could have been kept in storage, or destroyed.
Officers said the vehicle drove down Copenhagen Way, turned left into Station Avenue and went on towards Hersham, at 1633 GMT, on 21 March 2002.
Milly, whose real name was Amanda, was seen walking from the station and past the Copenhagen Way junction towards Hersham less than 25 minutes earlier, at 1608 GMT.
She was on her way home from school.
Milly Dowler's body was found six months after she disappeared
"We have had the CCTV for the last three years and very early on it was a major line of inquiry," Mr Marjoram told BBC Southern Counties Radio.
"The difficulty is that on a busy Thursday afternoon between four and five, there are hundreds of cars.
"Now we have the details of this car, we have reviewed the CCTV and released the footage."
He said officers want to speak to anyone who owns a red Daewoo Nexia and was in the vicinity of Station Avenue.
They also want to speak to anyone who saw the same car near Yately Heath Woods, Hampshire, where Milly's body was found in September 2002.