Playing devil's advocate: the projection alone won't be the patent and probably is not patentable on its own, the patent will be about applying such projections for real-time navigation which brings non-obvious difficulties that must be solved in a particular way (like the way the project is transformed during turns, how navigation is overlayed, and how motion sickness and distractions are counteracted) making the patent consist of the projection-styled navigation enabled by certain rules (what and how to present it) and the technical way the projections are transformed.

Having said that, the novelty is questionable since the projection is pretty well-known and creating a functional proof of concept that solves many of the patent's problems likely takes a day or so. But I'm not a lawyer so what do I know in this department?