DigiCash ???

I would like somebody to explain how I would go about using an anonymous digicash system to buy a automobile? Let us remember that the reason for anonymous transaction systems in general is that if identity is revealed by default, there can never be full privacy. Merely because transactions exist where revealing identity must occur, for example, in the transferring of vehicle title, does not mean that the identity needs to derive from the means of payment or any identity attached to that means of payment. Just because the larger transaction itself is not anonymous is no argument against the monetary transaction being anonymous. Eric