McLaren's Zak Brown has said that it is too hard to predict if Formula 1 becomes an all-electric series but that you can never say never.

It's been a big week in terms of F1 and sustainability with the sport announcing an update on its bid to become Net Zero Carbon by 2030.

That is going to take some effort around things like freight and logistics but the sport is at the forefront of technology, and will be determined to meet its goals.

McLaren, meanwhile, are also pushing their own sustainability quest onwards with them unveiling their Formula E and Extreme E challengers at their HQ on Monday, with both series' all-electric affairs.

Formula 1, meanwhile, is keeping with its hybrid power units and will be using sustainable fuels, with new engine regulations coming in for 2026, but Brown believes that you cannot rule anything out after the next iteration of engines come and go as to where F1 heads next.

When asked if we could see an all-electric F1 in the future, he said to the gathered press at the McLaren Technology Centre on Monday:

"Never say never.

"We're doing the new engine regulations now which will go out until 2031 so I don't see it before then.

"I think there are various different technologies on how to propel engines. Clearly electric is one but I think Hydrogen, sustainable fuels and hybrid [are all options.]

"I think it's too early to predict whether the world finds a sole solution or uses multiple solutions but for sure Formula 1 will be sustainable with whatever it does. But I think it's too difficult to predict what that solution is going to be."