Boullier said the shock of learning that one of his star drivers could have lost his life was deeply unsettling.
Kubica’s accident came at a critical moment for the Renault F1 team, which had just transitioned under new ownership to Lotus and retained both Kubica and Vitaly Petrov for the season.
The Frenchman admitted that while the team worked to secure a replacement, they had lost one of their most valuable assets.
Nick Heidfeld was brought in as Kubica’s stand-in, but Boullier said he was “not on Robert’s level,” highlighting the talent gap left in the team.
Kubica looked set for great things in F1 before his accident
Despite the devastation, Boullier worked to stabilise the team around its remaining drivers.
The 2011 season was a challenging one, and the loss of Kubica was a blow not only to team morale but to its competitive potential on the track.
“We knew we now had to make changes, and we did,” Boullier explained. “Kimi [Räikkönen] had been out of F1 for two years, doing a bit of rallying, but he wanted to come back to F1, and we thought he’d be worth taking a chance on.