European Technology Platform for the road transport sector  (ERTRAC)

European Automobile Manufacturers Association (ACEA)

European Oil Companies Association (Concawe)

Association for Emissions Control by Catalyst (AECC)

Society of Automotive Engineers (SAE)

European Biofuels Technology Platform (EBTP)

International Association of Natural Gas Vehicles (IANGV)

World LP Gas Association (WLPGA)

Renewable Fuels Association (the US ethanol association) (RFA)

US National Biodiesel Board (NBB)

European Biodiesel Board (EBB)

The European Fuel Oxygenates Association (EFOA)

Methanol Institute (MI)

International DME Association (IDA)