F1 technical expert Sam Collins looks at the upgrades and tweaks the teams have been making to their cars ahead of a big final push in the hunt for Constructors' glory. For more F1® videos, visit Formula1.com Follow F1®: instagram.com/F1 facebook.com/Formula1 twitter.com/F1 twitch.tv/formula1 tiktok.com/@f1 #F1 #BrazilGP #F1TV