What ever Goole does, its going the create headlines, and this project certainly will, but as far as Smart City's goes Google will explore the technology and share.
This is not BIM, this is super Big City data, but the video points points out what the challenge really is, complexe interchange of life styles, data and systems on a scale never seen before.
An excellent video to expand on the IoT, plus a load of
A link to the above but with all the in depth data