The M2 Mobile Mass Driver, more commonly known as the Ox, was a series of specialised flatbed truck built by JOTUN Heavy Industries. A mobile version of its stationary cousins which did not require an external source of power to use, the Ox carried two miniaturised mass drivers linked directly to a dedicated fusion reaction, the smallest of its kind at the time. Impressively, the Ox was capable of firing a standard seventy-centimetre long package up to an initial speed of 47,422 kilometres per hour (29,466 miles per hour) - fast enough to escape the gravitation pull of all but the largest colonies. This speed is capable of being of being adjusted by a sophisticated computer, reducing the package's speed in space based on calculations on the planet's gravity, and able to even link the two c