Racers will always be racers...

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They say that 'boys will always be boys', but the same applies to racers - active or former - who just need a minor spark to ignite their competitive spirit.

As former F1 rivals and current Monaco residents, Nico Rosberg and Felipe Maas know each other well. So when the former challenged the latter to a round of indoor karting, Massa was game.

Check out the video of what went down during the fierce electric shootout between the two die-hard racers.

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.