Ow do you envision the city of the future (year 2050)?

It should not be a scientific essay, rather own opinion and outlook. Please include many examples, such as how transportation will look like in 2050, how buildings will look like, how resources will be managed (since oil is likely to be a very scarce resource in the future) within the city, environmental practices and possible problems and solutions (e.g. space).
I attached the essay from a friend last year, which mine should be similar too, so you have an idea towards what direction it should go (you may also take one idea from his essay)