Zachary entered his base, sat down at his workbench, pulled out a dirty sheet of paper, something reminiscent of a pencil and a bite to eat and began planning his design. A carriage is what he wanted, a small one capable of carrying a person and some cargo. It would need a conventional carriage engine to provide movement across the horizontal. It would also need another engine to attract it to vertical metal walls as if it were a skyway. Even if he didn't use it to scale the Wall he could always use it as transport, for him and a crateful of tech and supplies. Holding him and supplies would best be done if the cabin was enclosed. The cabin would need some reinforcement so it continues to hold stuff in when on its side and upside down. The driver interface would perhaps be the most technical part of the build, as typically that relies on electronics, which are difficult to jury-rig together. An analogue system may be necessary, even if it's a bit out-dated. To keep other people from driving off with it he could disconnect a vital internal component using his powers, such as the battery.

Zachary fleshed out his design and ran some calculations to determine how much power his engine would need. Then he started thinking about where he could find what he needed to build it. He could take the chassis from an existing carriage and modify it to his specs. He could also take a carriage engine. The apocalypse may have left no functional vehicles left in Sovereign, but that doesn't mean all the engines are beyond use. However, finding a fully intact carriage engine would be difficult, as any scavengers looking for kinetic cores would find them in those engines. But Sovereign was a bustling city, so there are many vehicles to be scavenged. For the climbing up walls functionality he could take and modify a skyway core unit. They ran on polarity cores, and polarity cores aren't particularly useful in a post-apocalyptic wasteland without specialist knowledge so they would not have been heavily scavenged. Perhaps the hardest part would be getting everything back to his workshop, as these components would be rather heavy.

[b][i]If we had more power you could just carry them back,[/i][/b] Kaa'is suggested. Zachary didn't give Kaa'is a reply, and tried ignoring him. Perhaps if he found a carriage in close enough to working condition he could repair it on the spot and drive it back. But not straight to his workshop, as a running carriage in a silent city is in no way discrete and would attract unwanted attention. He'd have to find a secondary location to work on it and stash it, not too far from his workshop.

"OK, time to go scavenging," Zachary said to himself. He packed his bag with useful supplies- food, water, a few choice tools- checked that his kinetic shield and air cannon were in working order, and departed.