I read a book when I was much younger which follows the life of a robot which was built during world war 2.
He gets covered in blood and somehow this grants his sentience.
The rest of the novel follows his centuries long life.
I remember he was a racing driver at one point.
He strives to become more human and has fake skin/hair added as well as some kind of artificial penis.
I have no idea how to track it down... any help??