Based on the search results, GPX Movie can refer to two different things:

1. GPX Movie is a proprietary auditorium experience offered by some movie theaters, such as AmStar and Grand 16 Lafayette. It features luxurious seating, huge wall-to-wall screens, Dolby Atmos next-generation sound, and 4K laser projection to provide a fully immersive moviegoing experience.

2. GPX Movie is a file format used for storing and sharing GPS data. It stands for GPS Exchange Format and is commonly used by outdoor enthusiasts, hikers, bikers, and runners. GPX Movie records GPS data at regular intervals, including latitude, longitude, elevation, and sometimes additional information such as speed and heart rate. This information is saved in a GPX file, which can be opened and viewed using compatible software or applications. Users can analyze and visualize their data in different ways, retrace their steps, measure the distance traveled, and even share their routes with others.