I think there is a lot of publication based on examples in the automotive industry. I wrote a few articles related to the topic:
Conference Paper The green jobs and the Industry 4.0
Conference Paper Smart Cities and Challenges for European Integration
In my opinion the creating smart cities rely on the idea of the Internet of Things (IoT) and its usage in automotive which can provide an excellent bus service or car sharing grid, of autonomic cars and so on. This is a future which needs more ideas, but one of them you can find here (a movie about Polish Triggo car): https://www.youtube.com/watch?v=yfR6oB-GJSA
I think that Robert Rothe can contribute more to this question.
Maybe you also want to take a look at my research. It is concerned about the impact of new digital services (app and internet access) towards customer loyalty in the automotive aftersales business...