Lando Norris: McLaren driver unsure if Sao Paulo Grand Prix upgrades will improve 'horrible' McLaren car
Reigning F1 world champion Lando Norris played down McLaren's upgrades which will be introduced at this weekend's race in Brazil; <strong>watch Friday's practice sessions for the Sao Paulo Grand Prix from 3.30pm and 7pm, live on Sky Sports F1</strong>