The Working Group on Monitoring Methodologies of CO2 neutral fuels (WGMM) has published its report, prepared to respond to the European Commission’s request to industry, OEMs, and fuel companies, to present technological options that can prove and monitor the use of CO2-neutral fuels in new vehicles and contribute to the European Commission’s commitment to present a methodology for registering after 2035 vehicles running exclusively on CO2 neutral fuels.
Monitoring CO2-neutral fuels implies tracking and tracing the fuel from the production or entry point, in case of imports, all the way down to the final use in a given vehicle. The WGMM therefore features a broad sectorial representation including OEMs and their suppliers, fuel producers and fuels suppliers, and fuel retailers and their equipment suppliers, in order to ensure that the methodology proposed by the EU Technical Committee on Motor Vehicles
(TCMV) fits the requirements of all sectors of the automotive and fuels value chain for a robust and reliable proofing and reporting methodology.
The 130-page report is accompanied by 9 pages 
abstract and set of conclusions.
Source
Working Group on Monitoring Methodologies of CO2 neutral fuels (WGMM)