is a known car enthusiast and unlike the general public, he isn't subject to one particular regulation on the road. Our monarch is a big fan of electric cars and has been spotted driving an Audi E-Tron SUV around at Sandringham and taking the wheel of a Jaguar I-Pace.

Charles has a full fleet of luxury cars worth millions at his disposal, including vintage Rolls-Royces, Bentleys and Jaguars. His 1970 Aston Martin DB6 Volante, a gift from his mother on his 21st birthday, was converted in 2008 to in line with his environmentally friendly principles.

This week, Money Mail reported that a Land Rover Defender delivered new to the King and 15 years ago had sold for £60,000 at auction, with its royal provenance said to have boosted the price. The vehicle had less than 25,000 miles on the clock and is said to have been for the personal use of the then Prince of Wales and Duchess of Cornwall.

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And unlike his subjects, the monarch doesn't need a licence to drive - he doesn't even need to pass his test to be allowed to motor around. The reason being that the official document is issued in the 's name.

"Driving licences are issued by His/Her Majesty's Government under His/Her Majesty's authority," explained Jack Cousens, the AA's head of roads policy. This means the monarch 'does not need a driving licence'.

is the only member of the to be afforded such a privilege - other royals require a driving licence to step behind the wheels of a car, plus a certificate of a passed test. Queen Elizabeth - who was such a big fan of driving she was nicknamed 'Princess Auto Mechanic' in her youth - also didn't require a licence but she did take lessons. "We are proud that the Queen learnt to drive with BSM, which is part of the AA," said Jack.

Prince William will be handed privilege when he becomes King while Harry, who is fifth in line to the throne, is likely to always need a driving licence. "Only the Monarch receives this privilege so all other Royals would need a driving licence," said Jack. "The Queen Consort still needs a licence to drive."

King Charles enjoys even more motoring privileges - number plates are issued under his authority so he doesn't need one. "The Monarch will use predominantly use State Vehicles and these do not require number plates," said Mr Cousens. "Similar to licences, number plates are issued by His/Her Majesty's Government under His/Her Majesty’s authority."

The monarch is even able to travel freely overseas too, because passports are issued in his name. But if he was accompanied by other members of his family, such as his wife or son , they would need to bring official documentation with them.