AB One Games has another of their Vehicle Design Guides available over on Wargame Vault.
From the release:
Following on from our ‘Construction Guide’ AB One Games is pleased to announce the release of their Vehicle Design Guide. This shows players how to create their vehicles in accordance with the soon to be released Napoleon and the Armies of Mars rules. This booklet explains exactly what weapons, equipment and other gizmo’s can be used and also includes vehicle stat sheet templates for players to record their battle-winning designs. The Vehicle Design Guide is free to download from wargamevault.