The whole "road relevance" and "technical boundary" myth for F1 powertrains needs to die yesterday. The hybrid era has pretty much been the only time in modern F1 this was attempted and the sport is worse for it. There was nothing about pneumatic valved 20000 rpm NA V10/V8 engines made of beryllium alloys that was in any way relevant to pushing combustion technology for the road. There was nothing about 1500hp turbo engines that lasted one qualifying session that did anything for road car engine R&D. The DFV wasn't pushing the technical boundaries in the road car world for a long part of its existence. F1 shouldn't even try to push road car engine tech beyond scaling sustainable fuel supply chains. All they need are good racing engines that maximize power/weight and a low enough cost and with even just 2-3 manufacturers it would still go back to its mission of being the ultimate motorsport as it always should be.
