Amazon.com: LEGO Technic App-Controlled Cat D11 Bulldozer 42131; A True-to-Life Replica of an Iconic Construction Machine (3,854 Pieces) : Toys & Games
42131 CAT bulldozer leak : r/legotechnic
LEGO® Technic review: 42131 Cat D11T Bulldozer | New Elementary: LEGO® parts, sets and techniques