China has started a pilot project for sustainable cities in Liaoning Province named the Cradle to Cradle Village.
“The design of the village aspires to draw power from the sun, to maintain materials in closed-loop systems of technical and biological nutrition, and to create an intergenerational community of people productively engaged in restorative commerce. Its goal is to provide a higher quality of life for the villagers and to exemplify a more hopeful future for the children.”
For more information the BBC has a good article looking into sustainability in cities.
In addition to the obvious life-saving benefits, manufactured meat would allow the manufacture to control how much nutrients are in each slice. For example omega 3, which is a good thing, can replace omega 6, which is not as good for you.