NOVELTY - A hydrogen power generator and fuel cell system and apparatus comprises hydrocarbon fuel supply mechanism, an oxidizer supply mechanism, water supply mechanism, pump mechanism, oxidizer and water supply mechanism, thermally insulated high pressure elongate tank-like structure with upstream and downstream ends, a fuel and oxidizer mixing chamber and ignition chamber.    USE - The invention is for generating hydrogen fuel for use in fuel cells, e.g. electric powered vehicles.    ADVANTAGE - The inventive system and apparatus provides a hydrogen fuel stream that is free of carbon monoxide, carbon dioxide, sulfur and nitrogen.    DETAILED DESCRIPTION - A hydrogen power generator and fuel cell system and apparatus (EVHG) comprises:    (1) hydrocarbon fuel supply mechanism;    (2) an oxidizer supply mechanism;    (3) water supply mechanism;    (4) pump mechanism;    (5) oxidizer and water supply mechanism;    (6) thermally insulated high pressure elongate tank-like structure with upstream and downstream ends;    (7) a fuel and oxidizer mixing chamber;    (8) ignition chamber (IC);    (9) ignition mechanism (IS) for igniting the fuel and oxidizer mixture from the ignition chamber;    (10) steam generating system in heat conductive relationship with the ignition chamber and connected with and receiving water from the water pump mechanism;    (11) pressure chamber (PC) for receiving the gases produced by oxidation of the fuel and the steam;    (12) catalytic sulfur absorber (SA) for receiving gases and steam from the pressure chamber;    (13) catalytic steam reformer (SR) for receiving sulfur free gases and steam from the sulfur absorber, and reforming carbon monoxide gas into carbon dioxide gas;    (14) catalytic carbon monoxide scavenger mechanism (CMS) for receiving gas flowing from the steam reformer mechanism and converting residual carbon monoxide to hydrogen and carbon monoxide gas;    (15) collecting chamber for receiving hydrogen and carbon dioxide gas;    (16) heat exchanger (HE2, HE3) for cooling the high pressure heated gases to convert carbon dioxide into liquid state;    (17) liquid-gas separator;    (18) liquid carbon dioxide and hydrogen gas holding tanks; and    (19) hydrogen fueled cell structure having an anode and cathode.    The fuel and oxidizer mixing chamber is located at the upstream end of the tank-like structure and connected with the fuel and oxidizer pump mechanism. The anode includes hydrogen feed mechanism connected with the hydrogen holding tank. The cathode has parts connected with the oxidizer feed mechanism and parts connected with and delivers water produced by fuel cell reaction to the water supply mechanism.    DESCRIPTION OF DRAWING(S) - The figure is a schematic illustration of hydrogen fuel system and apparatus.    Carbon monoxide scavenger mechanism (CMS)    Hydrogen power generator and fuel cell system and apparatus (EVHG)    Heat exchanger (HE2, HE3)    Ignition chamber (IC)    Ignition mechanism (IS)    Pressure chamber (PC)    Catalytic sulfur absorber (SA)    Steam reformer (SR)