TECH WEEKLY: How the Mercedes W15 was transformed from a 'bouncing handful' into a Belgian Grand Prix winner

On the Friday of the Belgian Grand Prix even Mercedes would not have thought a 1-2 (before George Russell’s exclusion) was a likely outcome.

The Mercedes W15, with its newly updated floor and diffuser, was proving to be a bouncing handful and definitely looked only the fourth-fastest car. On Sunday it was at least equal-fastest with McLaren.