Video: Max Chilton and Alex Rossi compare F1 and IndyCar

Max Chilton and Alex Rossi both raced in Formula 1 - with Manor Marussia - before heading to the US to pursue their ambitions in IndyCar.

Mobil 1 The Grid spoke to the pair to find out about how the cars and the competition differs Stateside, and why concentration is key when it comes to racing wheel-to-wheel on fast ovals.

Check out the video.

Loading video

GALLERY: F1 drivers' wives and girlfriends

Keep up to date with all the F1 news via Facebook and Twitter

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.