Today's transport sector is a major energy consumer and is still predominantly reliant on a non-renewable fuel source: oil.
The economic development of a number of highly populated countries is therefore leading to a sharp increase in fuel consumption around the globe.
Environmentally-speaking, fuel combustion plays a major role in greenhouse gas (GHG) - and especially CO2 - emissions.
There are numerous potential options as an alternative to the use of oil: natural gas, coal, biomass. Using these resources, several alternative fuels can be obtained and used in vehicles.