Journeys™
Life is a journey.
Go find something™
Space travel is exciting. Going deeper into the Earth we grew up on—and keeping what we learn—is cooler.
The Journeys™ concept
Journeys is Tcab’s umbrella concept for cataloguing Earth. Not commodity pieces like maps, ratings, or transport alone, but a communication model between people and the planet—the journey.
Travel has power
A journey often begins so quietly you barely notice it has started. Those who feel that soft pull are already on their way.
Toward a future you can leave for—right now
- From “planned travel” to “discovery on the spot”
- From a “fixed place to live” to “living anywhere”
- From “living where you work” to “working where you want to live”
When a future where you can move when you want to move becomes real, people act more intuitively—and latent wishes they had never noticed become easier to discover. Those discoveries chain one after another; points of desire that were once invisible connect toward the future as if you were gathering a spider’s thread. That network of chain reactions accelerates the evolution of new lifestyles and values. Technology aimed at the future can change not only the mobility industry, but how people live.
Tcab™ and Journeys
Tcab is a technology-driven urban compute-resource platform: more free and convenient while mindful of climate and biodiversity—and dual-use ready when it matters. It re-centers cities, nature, life, and Earth around people.
Tcab™ Explorer — book and go
Explore Japan with Tcab Explorer: hybrid cars you can reserve and depart with anytime, with less noise around the moments that matter.
Tcab™ GRID — dual-use fleet net
In disaster-prone Japan, vehicles become urban compute resources for everyday mobility and emergency Dual Use.
Tcab™ Archive — preserving Earth’s diversity
Landscapes, life, and culture you only meet by driving into a place belong to everyone. Archive is not star ratings—it knows, catalogues, and keeps Earth’s diversity so it can be preserved.
Tcab™ Insurance
Adventure comes with risk; Insurance covers it with clear plans so you can travel freely.
Operational complexity — three layers, four problems
Most rental fleets in Japan run on franchises and are not vertically integrated. One-way trips trigger inter-company procurement; assets sit in siloed systems; knowing where each car is is itself costly. Tcab’s operations optimization uses three layers, with the compute layer classified as four problems:
- Industry-structure complexity — franchise fragmentation; cross-firm transaction costs (e.g. one-way buying).
- State / information complexity — vehicle assets and location/availability split across systems; spatiotemporal observation.
- Combinatorial computational complexity (four problems) — each is generally NP-hard (SAT’s decision form is NP-complete). Coupling them does not lift the complexity class name, but shared variables and multi-objective aims raise practical hardness.
- VRP — Vehicle Routing Problem — routes, repositioning, demand; core of “where is the car now.”
- Shift — Workforce Scheduling Problem — labor and shift assignment.
- Knapsack — Capital Budgeting — under limited capital (multidimensional: parking slots, headcount too), choose which investments (items)—parking leases, vehicles—to take to maximize expected value (e.g. NPV). Net profit itself is the objective (value), not an item.
- SAT — Satisfiability — does an assignment exist that simultaneously meets routing, staffing, and capital constraints? Decision versions of optimization (e.g. profit/spread ≥ threshold) are the same shape; classically NP-complete.
Through a vertically integrated system, Tcab formulates these as a single compute–control–decision problem.
Tcab™ Earth Catalogue
What kind of star is Earth? Land, plants, animals, water life, and how people make homes, food, and culture. Shared perception can become a portable museum—starting in Japan, expanding worldwide.
- Food — seasons, local craft
- Scenery — mountains, coasts, streets through the year
- Buildings — tradition to today
- Baths — onsen, sentō, healing culture
Japan’s travel essence is scenery, architecture, culture, food, and baths. Earth Catalogue keeps those experiences as records of curiosity for the future.
Related
Related: A future you can leave for now · What is Tcab™?