I understand that many people who own Ferraris may not want others to drive them. My intention is to start a company (which is the club) that provides members with access to a small fleet of sports cars, provides insurance, maintenance, etc. for those cars. In this fashion no one is providing their own personal car for sharing, instead a collection of people are buying into the company and paying monthly "dues" in exchange for access to the cars. This allows for members to be able to "check out" the cars owned by the company. The dues would provide the necessary money required to insure, maintain, and repair the cars, as well as cover depreciation in order to maintain the original value of the investment in the company. Because the company owns and insures the cars, the liability will be covered by the company. If the only members allowed are also owners, then the company would likely be run by the owners, and the overhead would be extremely low.
I have worked out a few different business models for how this could work, ranging from a simple collection of equal owners, to a more complex collection of owners with various levels of investment, and even a model where membership is open to those who do not invest, but pay higher monthly membership dues. If I could find a small handful of people willing to become owners in this company, I believe it could provide a way for the members to drive interesting and varied sports cars for far less than renting, and less than leasing or owning because of the shared investment.