While research continues on making fuel cells a more practical choice for vehicle propulsion - by using hydrogen gas to make electricity, with nothing but water vapor as the only exhaust emission - several models are making the transition from prototype to reality. Fleet Owner got to view a few such vehicles at the 2017 Washington Auto Show, notably Toyota's Mirai sedan and Honda's Clarity fuel cell car. (All photos by Sean Kilcarr for Fleet Owner)
Sean Kilcarr is a former longtime FleetOwner senior editor who wrote for the publication from 2000 to 2018. He served as editor-in-chief from 2017 to 2018.