Urban Chromatism

I dislike how cities are seen as the anti-thesis to natural settings. I dream of cities where they're as full of greenery and ecology as humans are able to live in. Bricks and concrete are not beautiful nor as helpful to people as a green roofs and living walls of plants could be. Congratulations to the Germans are leading the way in those roofs. Both the walls and roofs are able to help combat global warming and increase biodiversity by replacing the vegetation removed when constructing a building and by lowering the ambient temperature of a building resulting less energy needed to cool it. Besides they are delightful to look at. Google image that shit. I only hope Detroit realizes this before they are too far behind.
My largest problem with the Detroit area has to be the complete lack of a reliable and effective form of mass transit. There are only two options for transportation here. Either one can drive a car, which is expensive, stressful, and polluting or there's a poorly managed and not very expansive bus system. The bus is not very good for traveling far or quickly, though there are those that admirably make do with it. I've continually heard people around here saying they can't wait until the train goes through the suburbs to Detroit, that they'd use it all the time and not have to drive down there ever again. When are these trains that everybody keeps referring to coming? I haven't heard concrete statements concerning their construction. No movement has even been made on making a train linking Detroit to the airport and then to Ann Arbor to easy out of town travelers, businessmen and women, students and spur the local commerce of the two cities. It is not an unheard of idea by any means to have rail systems, both above and below ground, in fact in other cities of Detroit size they are common. Chicago and Portland have trains, Washington and New York subways, and many others. Why is Detroit hopelessly clinging to the past with supremacy of the automobile? Surely as the automotive industry further reduces its presence in the state the tide will more easily be shifted in favor of the more environmentally sound urban plan of mass transit and truly enter the 21st century.