Mechano-Hog

Mechano-Hog is a chopper vehicle that is created by top Horde engineers. This vehicle allows one party member to ride along in the side-car.

Mount Journal
Difficult to build and to maintain, these hogs more than make up for their expense through sheer cool factor.

Activating the Sidecar
To activate the Mechano-hog's sidecar and carry a passenger, simply invite them to a group. The player's pointer will then turn to a green mounting arrow when they mouse over the Mechano-hog, allowing them to jump on while the sidecar deploys itself automatically.

Source
This item is crafted with Engineering (450); taught by Schematic: Mechano-Hog, a Horde Expedition reputation reward.

This mount also has an extremely rare chance to drop from the Blingtron 4000 Gift Package and Blingtron 5000 Gift Package for Horde characters.

Achievements
Obtaining this mount awards the achievement Get to the Choppa!.