Virtual designs into physical objects/Contract manufacturing facilities

A large group of people all wanting the same item to be made could send the details of the design to a large-scale contract manufacturing and assembly company to make use of specialist facilities and economies of scale.

This might be a 'base item' and each individual then customises and finishes off the product according to their tastes. The item could be anything from a car, a mobile phone, a computer or an entirely new machine or device that has only recently been thought up...