The Speed Colour Survey shows a direct correlation between a driver's car colour choice and the average speed they drive, with drivers of white cars doing the highest speed on average. More than 40 per cent of drivers of white cars said they are prone to aggressive driving, gesturing and shouting. On average, they drive 12.7mph over the speed limit on motorways with 14 per cent admitting that they drive as much as 20 miles per hour over the limit. According to Churchill, this pattern is more to do with the personality and behaviour of the driver rather than the colour of the car itself. Churchill recruited psychologist Donna Dawson to explain the significance of colour choices and the behavioural patterns of the drivers who choose certain colours. She said: "Drivers of white cars tend to be status-seeking individuals. "At one end of the social spectrum you have the white car owner who is proclaiming his or her wealth by stating that they can afford a colour that needs cleaning frequently, while at the other end there is the 'white van man' who can be brash, open and overly confident." Colour Speed Survey White cars such as Britney's white Mercedes represent status-seeking extrovert drivers Drivers of silver cars, such as Freddie Flintoff in his silver VW Touareg are quietly confident and cool, calm and slightly aloof Grey cars are often chosen by those who are calm, sober and dedicated to their work, such as Jerry Seinfeld who drives a Porsche Spyder Green cars such as Ashton Kutcher's 4x4 are driven by individuals who are vigorous and balanced individuals Blue cars, such as David Beckham's Porsche represent introspective, reflective and cautious drivers who are deliberate in their actions. Red cars, like Jay Kay's Ferrari are driven by those who are passionate and full of zest, energy and drive. Black has often been the choice of colour of the rebel or the outsider such as the Batmobile. Drivers of yellow cars such as Rod Stewart's Dodge Viper, which was famously stolen, tend to be intelligent, imaginative and novelty-loving Frances Browning, spokesperson for Churchill Car Insurance says: "We spend a lot of time looking at behavioural driving patterns. Clearly the colour of car that people choose to drive says something about their personality and how they would like to be perceived and it is for those emotion-related reasons that they are likely to speed rather then the physical colour itself." Donna Dawson added, "Colour is important because it affects both our bodies and our minds. Colour is all around us, informing everything we see, touch, wear, use, eat and drink and this emotional influence transfers itself to the way we drive our cars."