The fuel cell. It is described as a contraption which according to Wikipedia, an electro-chemical cell that converts chemical energy of fuel into electricity through a reaction of hydrogen fuel with oxygen, or an oxidizing agent. That is the main principle between today’s hydrogen, or water powered cars such as the Toyota Mirai or Honda Clarity, as hydrogen is usually combined with oxygen, which after a process of covalent bonding, produces water.
Technically, fuel cell cars are electric cars ... Read even more