Downpatrick Crown Court heard that one of the alleged getaway cars, a Volkswagen Golf, which were both captured and tracked by CCTV, belonged to one of the accused.
The jury of seven men and five women were told on Tuesday that, the day before the murder of Mr Duggie Morrison, the VW Golf and a stolen Honda Civic were also captured on surveillance cameras making a "dry-run".
The Honda had been taken in a creeper burglary in west Belfast two months earlier.
The claims were made by prosecution QC Liam McCollum as he opened the case against the two accused.
They are Jamie Alexander Smith, the 34-year-old owner of the VW Golf who gave his address as Doagh Road, Newtownabbey, and Peter Greer, 37 and from Sherwood Road, Bangor.
Both Greer and Smith, who had different addresses in Belfast at the time of the shooting on 13 May 2011, deny murdering Mr Morrison, and the attempted murder of Mr Stephen Norman Ritchie, in a flat in Hazelbrook Avenue in the seaside town.
They also deny possessing the shotgun and 9mm pistol used in the shooting.
Mr McCollum claimed that neither man had a logical or coherent explanation for their movements, allegedly captured on CCTV, both on the day of the "cold-blooded assassination" and the day before, and that the circumstantial evidence painted an extremely powerful and overwhelming picture of their guilt.
The trial is expected to last up to four weeks.