Analysis of information sources in references of the Wikipedia article "Aston Martin DB6" in English language version.
...the royal couple then surprised the throngs of well-wishers with an impromptu spin around town in Prince Charles's car – a 42-year-old Aston Martin DB6 Volante MkII.
The royal bought the car back in 1970 when the car was first built. Charles only drives the vehicle some 300 miles per year, but it also averages 10 mpg. Now those gallons are the green kind, bioethanol from biofuel company Green Fuels, which sources it from good old British grapes.
