United 'flo-viz' Colors of Williams

©Williams

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©Williams

A flo-viz maculated Williams' FW41 - with Robert Kubica behind the wheel - looked like a tribute to an 80s Benetton yesterday during the final day of in-season testing at the Hungaroring.

Teams use flow visualization paint, sprayed on a car in specific areas, to reveal aerodynamic flows and details such as direction and attached/non-attached air flow.

Williams was running a 2019-spec front wing, so the car was abundantly sprayed with different colors to help its engineers get a grasp on the aero effect of the new appendage.

There's one drawback however associated with 'flo-viz': the massive clean-up job that remains to be done at the end of a run!

Phillip van Osten

Motor racing was a backdrop from the outset in Phillip van Osten's life. Born in Southern California, Phillip grew up with the sights and sounds of fast cars thanks to his father, Dick van Osten, an editor and writer for Auto Speed and Sport and Motor Trend. Phillip's passion for racing grew even more when his family moved to Europe and he became acquainted with the extraordinary world of Grand Prix racing. He was an early contributor to the monthly French F1i Magazine, often providing a historic or business perspective on Formula 1's affairs. In 2012, he co-authored along with fellow journalist Pierre Van Vliet the English-language adaptation of a limited edition book devoted to the great Belgian driver Jacky Ickx. He also authored "The American Legacy in Formula 1", a book which recounts the trials and tribulations of American drivers in Grand Prix racing. Phillip is also a commentator for Belgian broadcaster Be.TV for the US Indycar series.