[mlakewood]

There was an article I read a little while ago about urban/vertical farming in Detroit. It was saying that traditionally, like you say the economics of cost of transport vs cost of land has meant that farms are placed further out where land is cheaper. In Detroit, apparently the land in inexpensive enough in the inner city that the economics dont work out that way. I think its interesting to think in a macro scale what a might higher prices of oil will do to those economies.

[AJ007]

I wonder how much marijuana is grown indoors in the US? Perhaps there are some parallels not so much with cost of land but cost of transport with that one.

[thret]

The cost of discovery is what drives marijuana plantations indoors.

[rmason]

Not only that but there's a steam heating district in Detroit. I've wondered why cheap heat and cheap land hasn't resulted in green houses.

http://www.detroitthermal.com/company/service_area.aspx

There's even a large farm market where you could sell what you grow.

http://www.easternmarket.com/