Advanced resource collector
A free Weed Eater comes with each Tiberium Waste Facility
Essentially a lightweight combine harvester on a tracked chassis, it is designed for collecting veins from Veinholes and delivering them to the Tiberium Waste Facility for processing into Chemical missile payloads.
The Weed Eater is basically a overhauled harvester, meant to collect the vein appendeges of a Veinhole, and is the only unit in the game that can do this. Weed Eaters have similar armour, health, and speed as a regular Harverster and are required to fuel the Nod Chemical missile.