How does virtualization offer safety and security within a Digital Cockpit?

A modern cockpit contains a Digital Instrument and Infotainment System, but the current trend for cars is to bring a larger variety of new driver assist functions like parking assistance, automatic parking and rearview camera.  These new functionalities require the embedding of new computer systems in the cars which in turn creates additional production cost. Virtualization reduces this cost by executing multiple Operating Systems (having different requirements and criticality) on the same hardware platform without jeopardizing the system safety.