Blender Geometry Nodes : Box UV Mapping Node.

Box UV mapping node with offset and scaling functionality over x,y,z axes.

Scene (boxmap.blend) contains Box UV Mapping Geometry Node applied to a Suzanne model.

Car model on a video not included (it's just for presentation purposes).

To read UV in a Shader please use attribute node with attribute name set to "uv_map" and plug it into a coordinate vector of a texture.

Tested only with Blender 3.2.0 Alpha it may not work in other versions (older versions)

Use it on your own risk.