Transforming Space Transportation with Automotive Manufacturing Principles

As global demand for satellite communications and data connectivity accelerates, the need for reliable, frequent, and cost-effective launches has become increasingly urgent. However, the space industry continues to face a supply bottleneck: traditional rockets remain complex, expensive, and slow to manufacture. Overcoming this challenge will require adopting scalable, industrial-grade manufacturing approaches.

Interstellar Technologies, a private launch provider based in Japan, is tackling this issue by integrating automotive manufacturing expertise into rocket development. Building on its successful MOMO suborbital heritage, which reached space three times, Interstellar is advancing its orbital launch vehicle, ZERO, from one-off engineering toward mass-producible systems for higher launch cadence. The first flight scheduled for 2027 will carry 7 payloads coming from the USA, Singapore and Japan. A key enabler of this transition is the three-party business alliance with Toyota Motor Corporation and Woven by Toyota.

Formalized in August 2025, the alliance builds on cooperation between Interstellar and the Toyota Group that began in 2020, when Toyota personnel were seconded to support manufacturing. The partnership was reinforced by a $44 million Series F investment in January 2025, with additional personnel from Toyota joining Interstellar from August 2025. By combining Interstellar’s aerospace expertise with Toyota’s decades of experience in high-efficiency manufacturing, the collaboration is reshaping how rockets are built in Japan.

The alliance focuses on engine production and structural optimization. Interstellar’s engines are being manufactured in collaboration with Toyota, while next-generation manufacturing methods are being co-developed to reduce cost and shorten lead times. In parallel, Interstellar is working with Toyota to optimize lightweight A2219 aluminum propellant tanks for manufacturability and reliability.

This partnership positions Interstellar as the first startup to join Toyota Woven City as an “Inventor” highlighting the potential of cross-industry innovation. By bridging aerospace and automotive manufacturing, the collaboration offers a new model for scalable space transportation.