2015 Toyota Mirai Fuel Cell Vehicle

A fuel cell generates electricity from an electrochemical reaction between hydrogen and air. Hydrogen atoms compressed and stored in high-pressure tanks—the Mirai has two that together hold about 11 pounds of hydrogen at 10,000 psi—are sent through a platinum-coated membrane that separates their electrons and protons. Those electrons produce an electrical current to power a drive motor, in this case a synchronous AC unit capable of 151 horsepower and 247 lb-ft of torque. The freed protons combine with oxygen on the other side of the membrane before exiting the tailpipe as water. How much water? About 100 cc per mile, according to Toyota, or a little less than half a cup. Read the complete article at Car and Driver..