How does Janis Elspas's method for creating a Christmas tree out of shopping carts outperform traditional designs?

I don’t actually have a detailed step‑by‑step “method” from Janis Elspas for building that shopping‑cart Christmas tree, but I can speak to how a design like that can outperform traditional trees.

A giant tree made of shopping carts is:

• Visually dramatic and highly shareable on social media
• Memorable for malls, arts centers, and public spaces
• Reusable and eco‑friendly, since it repurposes existing carts
• Strongly branded as pop art, tying décor to place and experience

Would you like ideas on how to recreate a similar cart-tree safely for a store or event?