Police have found fresh leads in the hunt for the killer of a lorry driver who died when he was hit by a brick.
A £25,000 reward has been offered for information leading to the killers
Michael Little, 53, suffered heart failure after the brick was thrown through his windscreen and hit him on the chest on the M3 on the Surrey/Berkshire border at about 0030 GMT on 21 March.
The murder featured on the BBC's Crimewatch show on Wednesday night - and detectives hope the reconstruction may jog people's memories.
About 40 calls were received by Crimewatch immediately after the show.
It was just so senseless and unnecessary and it was such a waste of a life
Detective Chief Inspector Graham Hill, who is leading the Surrey Police investigation, said: "We have some very good leads."
Callers had named suspects, given details of similar experiences on the same stretch of motorway and told of conversations they had overheard relating to the murder, he said.
Sue Norman, the partner of Mr Little, who was from Hornchurch in Essex, said on the programme: "I miss him dearly.
"The fact that he was taken the way he was - it was just so senseless and unnecessary and it was such a waste of a life.
"I can't believe that no-one has come forward because they've just totally ruined my life."
Police have linked the killing to an attempt to steal a Renault Clio parked in a drive on Brackendale Road, Camberley, between 2300 GMT and 0115 GMT.
Officers obtained a DNA profile from blood found on the car and have been screening "targeted men" in the area over the past month.
Sue Norman said Mr Little's death had ruined her life
DCI Hill said: "The most direct route between the scene of the attempted car theft and the footbridge would have taken the offender(s) past the building site where the brick used to kill Mr Little was removed from.
"We are therefore looking at the likelihood that the same person or people were involved in both incidents."
He appealed for any witnesses to contact Surrey Police or the Crimewatch programme.
"This was a despicable crime and we are determined to find whoever is responsible," he said.
Mr Little's employer Ford Motor Company Ltd has offered a £25,000 reward for information leading to a conviction for his murder.