It's not the first time an F1 official has said something along these lines—last year F1 CEO Stefano Domenicali also teased the return of naturally aspirated engines. F1 is moving to sustainable fuels from next year, so as long as the energy required to make those fuels comes from wind or solar, it matters not whether the cars have hybrid systems.

FIA president Mohammed Ben Sulayem's pitch of F1 returning to V10 engines with sustainable fuels has provoked debate