Did you know that from May to September 2015, you can drop off your car keys and try an electric bike for free? Combined with Mobility Carsharing when desired. It's in the whole of CH, also in Zürich, Dietikon, Duebendorf, Küsnacht, Stafa...
To find a participating e-bike shop: bike4car.ch
And if the experience is positive, why not drop the car altogether?