Could Biofuels Bring Back V10 Engines to F1?

Could F1 return to V10 engines in 2026? As F1 looks to update its fuel regulations, there are currently two leading contenders in the fight - biofuels and e-fuels. Both have their merits, but why would F1 want either of them? Other than a backing from Porsche, that is... Jake Boxall-Legge looks at why the fuels are a step up from the current 2022 E10 fuel, and whether Vettel's Biofuel FW14B could lead to F1 returning to iconic V10 engines in the future.