Toyota has revealed an augmented reality system that is has been working on with the Copenhagen Institute of Interaction Design that turns a window into a touch sensitive screen that interacts with the outside world.
The car-maker's new technology, dubbed 'Window to the World', allows passengers to draw images onto their windows that interact with the scenery outside the car. In a demo video from Toyota's Belgian wing, a child is shown drawing a tree which then tracks along the window and out of view as the car begins to drive.
This is just one feature of a host of more impressive technologies, with the ability to zoom in sections of scenery by drawing and stretching a square on the window and pinpointing distances of landmarks.
It's not all in the windows either - a virtual constellation feature crops up on a panoramic roof display, pointing out star patterns and displaying information about them.
It's still a concept, first put on show last month at the Autoworld Museum in Brussels, but it does give a keen glimpse at the future of in-car entertainment and augmented reality.