"There were two people in a silver car and they came running and they shot this guy in another silver car and jumped in a green car and they were driven off. I think there were three shooters."
"Q. Would you recognise either of them, that is to say, the driver and the passenger in the silver car?"
"One, the person who picked me out is mistaken; two, I was not at the scene nor was I in a silver motor vehicle on18th July 2006 ."
"Whenever ... there is a witness available, who expresses an ability to identify the suspect, or [our emphasise] where there is a reasonable chance of the witness being able to do so ... an identification procedure shall be held unless it is not practicable or it would serve no useful purpose..."