Armadale Detectives have charged a 25-year-old Gosnells man and a 35-year-old Kelmscott man with aggravated robbery following their investigation into an incident in Gosnells on October 26.
It will be alleged the men were being given a lift from the victim when they asked him to pull over on Tonkin Highway.
As they were parked on the side of the road it will be further alleged the victim was hit to the back of his head and knocked unconscious while the two men left in his vehicle.
The 25-year-old man from Gosnells is due to appear in the Armadale Magistrates Court today and the 35-year-old man from Kelmscott appeared in the Perth Magistrates Court on November 6.
He is next due to appear in the Armadale Magistrates Court on November 18.