"The large reduction in the consumption of animal products within the zerocarbonbritain2030 scenario frees up land that can be used to grow biomass. One of the uses to which we put this biomass is to create biofuel in order to power those transport sectors for which there is currently no alternative to liquid hydrocarbon fuels: aviation, shipping, some heavy goods vehicles and some farm machinery." Summary from zerocarbonbritain2030 on "Transport biofuels" a contentious subject.