The family of a former London cabbie are keen to find out why his vehicle crossed to the other side of the road and hit another vehicle head on in Jandakot this week, killing both drivers.
British migrant Glenn Griffiths Carter was killed on Tuesday when the Toyota Avensis he was driving collided head-on with a Nissan Pathfinder on Roe Highway east of Karel Avenue in Jandakot about 6am.
Mr Carter was a "much loved husband, brother, uncle, Poppy and friend," his family have said in a statement.Luke Wales, 28, who was driving the Nissan, died instantly at the scene.
Police hope autopsy results will shed some light on why Mr Carter lost control of his car.
Major crash investigators want to speak to anyone who saw the Toyota before the accident.
Police believe the Toyota was among several cars and a truck before it began to swerve across the median strip.
In a statement issued this morning his family said Mr Carter impressed everyone he met as kind, caring, easygoing and willing to chat to anyone at any time.
"He loved life and was a careful, diligent person, who, until recently, worked in construction near London, and drove Mini Cabs on the weekends to further his dream of migrating to Australia and being with family," the family said.
"We are shocked and devastated by this terrible tragedy. Words cannot express our grief and sorrow at the sudden loss of both Glenn and Mr Luke Wales.
"We grieve for them both and for all the family and friends who knew and loved them.
We are hopeful that the police investigation will further our understanding of how this awful event came about.
"We appeal for any witnesses to contact Crime Stoppers on 1800 333 000."
The family thanked the Police Major Crash Unit, "who have been outstanding in their service" and asked for privacy from the media.The girlfriend of Mr Wales, Eline van Duuren, said this week his death had left a big hole in the lives of those who loved him.