MODEL RELEASED. Virtual reality engine. Engineers working on a virtual reality (VR) car engine. The engineer at upper centre is wearing a headset which provides images and sounds of the equipment that he is working on. Another engineer is at bottom right. By monitoring the engineers' movements in a virtual world, the VR system can provide computer-generated responses to their actions. The use of VR in training and design can create large savings in costs and time. VR representation of a Porsche engine.