Getting used to a Fernando Alonso-free Formula 1 will be a difficult task, but the truly unenviable one is working out how the championship will fill the void he will leave.
It may well prove to be an impossible challenge. Through his titles and his tantrums, his wrong choices and his wretched luck, his underdog heroics and his unquestionable ability, Alonso has morphed into a truly unique driver.
In a way, that makes McLaren's job relatively easy. There is no driver like Alonso on the market, so it needs to scour the field for free agents, or likely free agents, compare them against what it has in Stoffel Vandoorne and Lando Norris, and pick the best available option.