Skorpius Hover Tank
A vehicle utilized exclusively by the Skitarii, the Skorpius Hover Tank basically serves the same function as a Rhino, with both transport and battle tank variants. Except it's a hovercraft. Not fancy anti-grav tech either, it's pretty much just a conventional hovercraft. Apparently using big-ass fans to float an armored vehicle on regular old air (something we can do in fucking M2) is now, and we quote: "barely understood, deadly technology from the Age of Darkness." Yeah.
Skorpius Dunerider
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The Higgins Boat of 40k (or a smaller and more advanced version of the Gorgon Armored Assault Transport, either/or), the Dunerider works exactly the same as the WWII Landing Craft that inspired it: hit the beach battlefield, suppress enemies with the many stubbers mounted on it, and then drop the front ramp and have the Skitarii within re-enact the opening scene of Saving Private Ryan. Ironically, it's arguably the most conventional vehicle design in the entire Mechanicus motor pool (they apparently don't use Chimeras, Rhinos, and Land Raiders anymore), to the point where the one thing about it that doesn't make sense is why the Imperial Guard aren't allowed to use it, seeing as how the technology behind Sentinels and Plasma Guns is more complex than a Skorpius Dunerider. According to the Regimental Standard, their use of "primitive hover-tech" is to be understood as a proof of the AdMech's charity in "saving more solid wheels and treads for the Astra Militarum".
Skorpius Disintegrator
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A battle tank variant of the Skorpius.