This white paper presents a complete, engineering-feasible architecture for converting anyfossil-fuel vehicle into a hydrogen-powered platform using fresh water as the hydrogen feed-stock. Because water (H2O) is a stable molecule, the system relies on external clean energyto separate hydrogen (H2) from water through electrolysis or other dissociation methods.The hydrogen is then delivered to the vehicle via a fuel cell, hydrogen internal combustionengine (H-ICE), or hybrid electrolytic assist system. This document merges high-level scien-tific theory with hands-on engineering instructions to produce a deployable, comprehensiveframework for transportation, construction, robotics, and marine systems.