the first guy - steven - who got shot at the petrol station, there was a problem between him & the shooter, i think steven tried to bully him into giving up his shop or caused trouble for him to try to get him to leave it, i think the wife & assistant where just there so collateral damage. not sure about the lorry driver, i think he might of been to get the attention of the police to speak to them, the policewoman was as a result of the police making a (false) statement about the boy giving him up