“…Where volume and speed are involved, motorised vehicles, trains, ships and aircraft provide four main alternatives all of which, following initial focus on water, wood and steam power, have come to rely on fossil fuel in the form of oil, petroleum and or gas as their source of energy propulsion and lubrication (Huber et al , 2006). As discussed, a turn to biomass is being encouraged for motor vehicles (where liquid fuels are likely to remain the main transport fuel for several decades (Ernst & Young, 2011), trains (non‐fossil fuel generated electricity propulsion and biodiesel, see Lingaitis and Pukalskas (2008)), ships (Vidal, 2012), and aviation (biokerosene, see Burritt et al (2011a, b)), with sources such as plant oils being generally available to fuel all forms of transport. Governments promote, target and support: the take‐up of renewable energy sources for electricity generators which can power intercity trains and cars, the reduction of carbon emissions in different industries through mechanisms such as the emissions trading system in the European Union, the control of sustainable fuel targets for airline companies, etc.…”