@thatbrickster @taylan >I want ICEs to be modified to accept hydrogen as a fuel source
You must be a hydrogen-embrittlement enjoyer - most metals exposed to hydrogen soon end up being embrittled by hydrogen.

Fuel cells are much more efficient than ICE's, thus you would want to use electric motors and a fuel cell, less proprietary software.

The main issue with hydrogen is actually keeping it in a dense form so the fuel tank delivers a comparable amount of energy to hydrocarbons, which is difficult and expensive.