Well, this would be another method for achieving heads up displays. Here's an application that I think would be really cool: HUD retrofits for cars. Take a transparent plastic film, stick it to the inside of your windshield in a similar manner like you would apply a tint film to the side and rear windows. Then, take the connector dangling from the corner of the film and connect it to the supplied box which connects t…
I personally find it super useful! I don't need to look down at my instrument panel as my current speed gets sort of projected on road ahead of me. It's small and a barebones design but it works.