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.
GALLERY: F1 drivers' wives and girlfriends
Keep up to date with all the F1 news via Facebook and Twitter
