Changes into

When its hit points run out it becomes Green Empty Shopping Cart.

Drops when destroyed

When it collapses

Falling, it leaves Scrap Metal Pile (75% of the time) where it lands.

Loot

Holds the Shopping Cart loot container: 6 × 2 slots, 42 possible items.

Chance of at least one per open at loot stage 50. Every item and stage.

Where to find (2 POIs)

Sprout & Sons Nursery (tier 4), Uncle Ray's Supermarket (tier 3).

Points of interest built with this block (any of its variants), the highest tiers first, from the game's prefab files.