BMW H2R Prev Next HowStuffWorks It's sleek. It's aerodynamic. It's powered entirely by hydrogen. The BMW H2R has already set nine speed records in its class. Learn all about the H2R and BMW's unique, liquid-hydrogen combustion engine in How the BMW H2R Works. Up Next How Formula E Will Work Can the U.S. Navy turn seawater into jet fuel? Can ethanol damage your engine? How Carbon-neutral E-fuels Work Are electric cars a failed experiment?