With Connected and Automated Vehicle technology progressing strongly, it is becoming more important to investigate how humans will be able to adapt to the introduction of these machines to society. A common method of investigating this issue is via Human Factors Experiments, commonly conducted via simulations. While many simulation platforms for automated vehicles exist, there are currently few platforms that take advantage of the potential to synchronise a virtual simulation and a physical environment. This synchrony can be used for automated vehicle testing and Human Factors experiments as it allows for both a Vehicle-in-the-Loop and Human-in-the-Loop component. Using a number of open-source software (namely CARLA and ROS) connected to a physical drive-by-wire vehicle (StreetDrone Twizy), a simulation platform was developed and shown to be capable of achieving synchrony between the physical and the virtual environment. CARLA, controlling a virtual vehicle in a dynamic virtual environment, would actuate the StreetDrone Twizy via a ROS interface. It was found that using multiple scenarios (e.g a person in a simulation walking out onto the road in front of a car), the physical vehicle was operating as if it were the virtual vehicle in the virtual environment. This experiment proves that it is possible to achieve synchrony between a virtual vehicle and a physical vehicle in real time using open-source software. This has the potential to increase the reliability of simulations-based experiments on human factors and testing of automated vehicles due to the more realistic nature of the platform.