Trucks , buses , trains , heavy duty transportation require a lot of power. HCE hydrogen combustion engines are extremely powerful. In conventional combustion engines the carburetor mixes oxygen and fuel (either gasoline or diesel) and sprays it into a compressed cylinder. This mist explodes and drives the cylinder down creating the engine power. In a hydrogen combustion engine a carburetor mixes oxygen wth hydrogen gas and sprays it into the compressed cylinder. When ignited , hydrogen drives the cylinder with 5 times the force of gasoline or diesel. HCE U.S. Department of Energyhydrogen combustion engines are being researched with grants from the federal government. General Motors has more engine building capacity than any company on earth but BMW has on the road now , the HCE Hydrogen Compression Engines of the future. BMW , Hurry up ! GM get in the game. N1R eagerly looks forward to this development.