Just idle thoughts Peter, but if the firmware that ECU/BCU's use is saved, which costs virtually nothing, then won't there be a market for specialist companies to offer re-engineered components using future hardware. Even reverse engineering may be possible by then. Either way this would future proof virtually any potential classic car of small or large production.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone