The British Grand Prix was red-flagged after a horror opening-corner multi-car smash at Silverstone on Sunday, with Zhou Guanyu's Alfa Romeo flipped upside down and hurtling over the barrier.
As Max Verstappen pipped pole sitter Carlos Sainz to the first corner there was "carnage" behind with marshalls rushing to Zhou trapped in his stricken car.
George Russell's Mercedes, Alpine's Esteban Ocon, Yuki Tsunoda (Alpha Tauri) and the Williams of Alex Albon were also involved.
A specialist crew attended Zhou who was safely lifted out from his car and carried on a stretcher to an ambulance to take him to the medical centre.
An FIA statement later announced the Chinese driver and Albon were conscious and being evaluated at the medical centre, prompting cheers from the grandstand.
"We are told driver is okay. Zhou is okay," Valtteri Bottas, his Alfa Romeo teammate, was told over the team radio.
The roadworthy members of the grid returned to the pits to wait for the re-start.
"Carnage at turn one and sadly Alex is out," tweeted Williams.