It is believed George could be driving his dark blue Vauxhall Crossland, registration number YF68 NZW.
Officers are very concerned for his welfare and are appealing to anyone who has seen George or his car to contact them.
He is described as having grey hair and wears glasses, it is not known what George is wearing.
Searches are currently being carried in the Pateley Bridge and wider Craven and Richmondshire areas.
Anyone who has seen George or his car should contact North Yorkshire Police on 101. If you have an immediate sighting of George, please call 999.