The Liverpool taxi bomber had spoken only two words during the journey before the explosion outside the Liverpool Women's Hospital.
Hero taxi driver David Perry had a miracle escape after a home-made device strapped to his passenger Emad Jamil Al Swealmeen - who changed his name to Enzo Almeni - exploded in the back of his cab outside the hospital on Sunday.
Chilling shop CCTV footage has been published by the Liverpool Echo showing the final journey of Almeni on his way to sow terror at the hospital.
This comes after a source close to the driver told the Mirror the bomber only spoke two words - “Women’s hospital” - after he was picked up for the seven minute car journey shortly before 11am on Remembrance Sunday.
"He didn’t say another word all the way there. The driver was not aware of anything” said the source.
He said David was briefly knocked out by the force of the blast, which blew out his windscreen and sent shards of glass and metal spiralling in the air.
The source added: “He woke up leaning on the steering wheel. He was trapped and then saw flames coming through the two seats.
“He couldn’t get his seatbelt off so had to climb out of it.”
David was able to scramble free seconds before his car was engulfed by flames with Almeni still inside.
His wife said later her husband was saved by “guardian angels”.
The Liverpool Echo learned that Mr Perry's taxi travelled along Lodge Lane on its way to the Crown Street site, and was captured by cameras at The Green Mountain Food Store, by the junction with Tagus Street.
Manager Naz Al-Asadi, 27, told them: "The police came in around 12pm yesterday, they said to me can we check the CCTV.
"I said yes, we should work together as this is something not good at all, this is very, very bad.
"They knew the time and they took a copy.
"It is very horrible, very very bad. I just want to know what was going on with this guy, it is not normal."
Four men arrested in relation to the explosion outside the Women's Hospital in Liverpool on Sunday 14 November have now been released from custody following interview.
Assistant Chief Constable Russ Jackson, said in an update on Monday: "Following interviews with the arrested men, we are satisfied with the accounts they have provided and they have been released from police custody.
"The investigation continues to move at a fast pace with investigative teams working throughout the night.
"We have made significant progress since Sunday morning and have a much greater understanding of the component parts of the device, how they were obtained and how the parts are likely to have been assembled.
"We have also recovered important evidence from the address at Rutland Avenue which is becoming central to the investigation.
"There is a considerable way to go to understand how this incident was planned, prepared for and how it happened. We are gaining a better understanding by the hour but it is likely to be some time, perhaps many weeks until we are confident on our understanding of what has taken place.
"In the meantime, we have considerable resources and staff deployed to understand how this device was built and who if anyone else was involved. If the evidence takes us to the involvement of others, further arrests will quickly take place."
Anyone who has any information should call on 0161 856 1027 quoting Liverpool Womens Hospital incident.
Details can be passed to the independent charity Crimestoppers anonymously on 0800 555 111.
