Sounds like a good idea. After all, who REALLY wants to own a Ford Fusion/Mondeo (or any other mass market car). Ferrari, Bugatti, McLaren are works of art as well as practical vehicles but most of us will only ever dream of owning one.

Most of us own a car for the purposes of getting from where we are to where we want to go, when we want to go there.
If we can achieve this through some sort of shared ownership, without the hassle of servicing, taxing and safety checks then sign me up.