Ferrari appointed Zhou Guanyu as a Formula One reserve driver on Wednesday after the Chinese lost his race seat with Swiss-based Sauber.
A General Motors-backed Cadillac entry will become Formula One's 11th team next year after securing formal approval from the commercial rights holders and governing FIA on Friday.
While Formula One rivals head to the sea or mountains at the start of the August break, Max Verstappen has some driving lessons on the horizon.
The financial troubles that have forced the Marussia and Caterham Formula One teams into administration emphasise the need for cost-cutting measures, the sport's governing body said on Thursday.
Marussia will race with only one car in Sunday's Russian Formula One Grand Prix out of respect for their severely injured French driver Jules Bianchi, the team said on Friday.