Tony Seba, in Chapter 5 of his book Clean Disruption, describes the 'car sharing' economy, his initial experiences with Zipcar, and other car sharing companies. My wife and I subscribe to this notion having also used Zipcar (while living in Boston), Turo, and other car sharing/rental companies. I assume that most everyone has rented a car before for example.
So far, our car sharing/renting experiences have well complimented our use of the iMiev.
Seba goes on later to describe the ICE car as the 'Ultimate Waste Machine'. Based on our experiences with our van, we completely agree with this description. In retrospect, we could have eliminated the van, and used car sharing for trips, etc., a long time ago.
In Phoenix, we have Turo and Zipcar for instance, along with Uber and Lyft. We are looking forward to the variety and presume the same positive experience that we had with the Volt, see the post above.
The challenge to us all, including this group, is to reduce our waste. As to ICE cars, it seems that they can be eliminated, or as JoeS posted, shared to reduce the waste.