From Halopedia, the Halo wiki
- In 2319, AMG Transport Dynamics designs the first M12 Warthog prototype, dubbed the "Z-12". The Z-12 prototype vehicles quickly prove to be popular due to a well-crafted advertising campaign and adept engineering team.
- Within the first eight months of the Z-12 prototype's existence, AMG receives over three dozen exclusivity contracts. Most of these contracts come from the Colonial Military Administration.