Sustainable transportation has gained larger agenda now in many countries and specifically at micro level by local bodies like municipalities. Objective is to reduce the carbon footprint, reduce dependency on fossil fuels and easy maneuvering in city centrals.  
So here is a series of some interesting initiatives and success stories that have and are taking place. 
Move About AS – A company based out of Oslo  Norway 
In another model, companies can book the fleet and employees on certain routes can pool the car to drive. 
What makes this model more tempting and potentially successful is that it offers a zero emission, zero maintenance and zero ownership costs. Also since most of the cities offer substantial benefits for eco-friendly cars like no parking fees (since this is a major cost in city centers of hefty charges) and no congestion tax or emission tax and more over offers good flexibility than a public transport when required. There is no toll charges too! And the insurance is included. 
 Move about deploys the Think  City  cars and presently has a fleet of over 60 cars in Oslo Sweden  and Copenhagen  Denmark Sweden 
Hope to see this initiative moves many cities and gain popularity. 

