Grappling Hook and Tether
LB/L1 fires the hook and reels you in if you tap it. If you hold it, it fires at the object and attaches. While still holding LB/L1 you move the crosshair to the second object that you want to tether and release LB/L1.
When objects are tethered, LT/L2 retracts the cable between the objects and tries to pull them toward each other if the tether is strong enough and the object is able to move. For example, cars can be thethered together and smashed into each other but permanent buildings and structures cannot be moved and the thether will snap.