Malaysia's Sepang circuit is making a one-off return to the Formula 1 calendar as a proxy host for the Bahrain Grand Prix, bringing challenges both familiar and new.
The hot and humid conditions, along with the daily late-afternoon rain downpour, act as a Proustian madeleine for those with previous experience of this venue. For others – including most of the drivers on the grid – these are conditions they have only read about.
