Douglas Keever
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![](/images/thumb/d/d7/Douglas_Keever.jpg/300px-Douglas_Keever.jpg)
Douglas "Mater" Keever performed the voice of R.M. in Cars.
Roles
Trivia
- His nickname was the inspiration for Mater.
- The name "R.M." also references this, as it stands for "Real Mater".[citation needed]