The Prince of Wales got behind the wheel of a black 1953 MG TD to drive to a rally of restored vehicles.
The car was once owned by Britain's ambassador to Cuba before Fidel Castro brought communism to the Caribbean island in 1959.
Charles - who is well known for his interest in cars - looked to be in his element and told a well-wisher the MG TD was "the most beautiful car".
The Duchess of Cornwall watched on fondly as her husband chatted with vintage car owners at the event, affectionately remarking: "He's never going to leave, he loves his cars."
After the rally Charles and Camilla headed on an impromptu walkabout of Old Havana, stopping to chat with local residents and admiring the historic architecture of the former Spanish colony.