Batteries
In the book
Closing the loop on batteries, copper, and the materials the energy transition consumes. Cathode, feedstock, and remanufacture as a product — the other half of the vehicle stack.
Launch and autonomy both starve without cells. Redwood treats the battery as a materials system: recover, refine, return. The pack is not a part you buy. It is a loop you own. That is hardware with a moat.