I like to think of Virtual Design & Construction (VDC) as a process that ideally flows through a project, digitally (i.e., virtually) creating, collecting, transporting, and delivering project data from design through construction. The VDC process includes software, hardware, and people – ideally all in the proper configurations and locations to allow for cooperative participation, and enabled to deliver a high performing (i.e., optimized) constructed facility. In this context you could say that if BIM is the car then VDC is the driver.