what happened to doc in cars

According to the search results, Doc Hudson is a character from the Pixar movie "Cars." He was a once-famous race car who retired into small-town obscurity after a crash. It is implied that Doc died before the events of "Cars 2" due to the passing of his voice actor, Paul Newman, in 2008. The exact cause of his death is not explicitly mentioned, but it is implied that he died of old age. In "Cars 3," Doc appears in flashback sequences, and his relationship with Lightning McQueen becomes central to the plot.