This was meant to be the start of a project by which a user could navigate an endless procession of products, with the individual products being pseudorandomly generated based on a seed tied to user position in the game world. I also had some ideas about making it more game-like, with a target item that the player would need to find.
I ended up with just a rough prototype, then I got distracted with other projects. The demo included generation of a shopping cart and shelves (through hand-coded vertices), and simple keyboard navigation. See below for a video of the demo.