Their son , Shane , was a racing driver who competed in a few non-Championship Formula One races .
Their son , Shane , was accidentally killed at the age of 24 when practicing for the 1961 Silver City Trophy at the Brands Hatch circuit in Kent .
Their son , Shane , was a racing driver who competed in a few non-Championship Formula One races , but was accidentally killed at the age of 24 when practicing for the 1961 Silver City Trophy at the Brands Hatch circuit in Kent .