SinergiaLab · UnitedCities · 2026-09-08

The transport revolution in UnitedCities

Why move a ton and a half of vehicle to carry seventy kilos of person? The UCVS is UnitedCities' design answer: modular, expandable and systematized.

There's a question almost nobody asks while driving to work: why move a ton and a half of vehicle to carry seventy kilos of person? In UnitedCities that question has a design answer, and that answer completely changed the way people move across land, water and air.

The system is called UCVS, UnitedCities Vehicle System, and it rests on three rules.

Modular

The first change is to stop thinking of transport as whole, single pieces. A vehicle almost never uses its full capacity: the back seats, the trunk, the full load. Most of the time, that space travels empty.

The UCVS solves this the way a set of blocks does: every vehicle is assembled from modules that get added or removed according to the real need of the trip. One person alone doesn't carry the weight designed for four.

The UCVS works like the Lego system, the modular toy, but applied to transport.

Today we take a whole lot of mass and volume out for a stroll for no reason. Modularity solves that problem: it combines the parts that fit the occasion, a seasonal trip or a ride to work.

Expandable

A material developed for this world makes the second change possible: PER, electro-rigidizable plastic. With a small electrical impulse it turns rigid. Without it, it softens and stretches.

Systematized

There are no separate systems for land, water and air. They all belong to a single standard, the UCVS, with parts and accessories that swap between them regardless of domain.

A modular ship is assembled from bow, passenger module, cargo module, two propulsion modules and stern. An intercity train is assembled from locomotive, passengers, cargo, propulsion and caboose. Equivalent roles, solved with the same design language, even if one floats and the other runs on rails.

The Transconverters

The whole system runs on Transconverters, in sizes that answer to very different scales of life:

Micro. Personal and domestic use. It works for small vehicles, but also for tools and artisanal production.
Mini. Powers homes and dual urban engines, and can move family-sized vehicles.
Midi. The scale of public transport: modular trains, buses, vessels.
Large. Exclusive to UnitedCities, reserved for city infrastructure such as desalination plants. They're identified by their exact diameter and are modular among themselves: several combined units can cover even greater needs, like moving an entire floating city.

Outside this licensed circuit, anyone can build their own vehicles from local and recycled materials, using freely available Transconverters. The scale of what you need is what determines how far you can go inside the system.

What does a well-designed system do with the ambition of the people using it?

That limit of scale has its flip side: a black market for large parts, for whoever wants more power than they're entitled to. The UCVS design shrinks the waste of resources. Human ambition remains everyone's own business.

An idea, not a catalogue of vehicles

The strength of the UCVS is that the same logic works at every scale. The rule that keeps an individual flying chair from carrying excess weight is the same one that allows several giant Transconverters to be joined together to move Nagara.

A technology that adjusts to what each situation needs, instead of demanding more of the planet than necessary.

It's a concrete form of bio-belonging: transport stops being a demonstration of power and goes back to being what it always should have been, the lightest way to get somewhere.

The SinergiaLab team

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