Mercedes looked dominant but was a flaw in their W11 car revealed? Meanwhile are Ferrari and Red Bull shaping up for a championship charge? Here's what the second week of testing unveiled… For more F1® videos, visit http://www.Formula1.com Like F1® on Facebook: https://www.facebook.com/Formula1/ Follow F1® on Twitter: http://www.twitter.com/F1 Follow F1® on Instagram: http://www.instagram.com/F1 #F1

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