Did James Dean Really Speed to His Death?

For James Dean fans it has been the ultimate unsolved riddle. Just who was behind the wheel the day the actor, only 24, died?
For 50 years, since his death in a car crash on September 30, 1955, Dean has been portrayed as a daredevil driver whose speeding and recklessness on the road caused his own death.

Now, new evidence has emerged proving that not only was Dean driving safely, but at a much lower speed than was believed at the time.
It has long been part of Hollywood lore that Dean, with his passion for fast cars and reputation for rebellious behaviour, was driving his high-powered Porsche Spyder 550 when he and Rolf Weutherich, a mechanic, smashed into another car on a Californian highway.