A. All fuels explode. The key is to have it explode inside the engine at a time and manner whereby the energy of the explosion is most efficently converted into mechanical motion.
You are producing the hydrogen on demand; it is never stored anywhere.
Hydrogen is the lightest known gas and has the fastest dissipation rate in air. The BG produced by a ER HyZor cannot form a combustible mixture in a ventilated area.
Brown’s Gas is entirely non-toxic (made from water).