Attractive green city = less transport
If there is sufficient attractive greenery in the direct living environment, citizens have less need to leave the city in weekends [Rainer, 2000]. This limits the use of energy for transport.
A good green urban infrastructure for slow traffic encourages the use of bicycles and keeps urbanites out of their cars, saving on transport energy.
A further introduction of urban agriculture and local sales limits the amount of energy required for transporting food.