Detroit - Hydrogen fuel cell cars could one day challenge electric cars in the race for pollution-free roads - but only if more stations are built to fuel them.
Honda, Toyota and Hyundai have leased a few hundred fuel cell vehicles over the past three years, and expect to lease well over 1000 this year.
But for now, those leases are limited to California, which is home to most of the 34 public hydrogen fueling stations in the US.
Pollution free roads
Undaunted, automakers are investing heavily in the technology.
General Motors recently supplied the US Army with a fuel cell pick-up, and GM and Honda are collaborating on a fuel cell system due out by 2020.
Hyundai will introduce a longer-range fuel cell SUV next year
Charles Freese, head of GM’s fuel cell business said: "We've clearly left the science project stage and the technology is viable.”
Like pure electric cars, fuel cell cars run quietly and emission-free. But they have some big advantages. Fuel cell cars can be refueled as quickly as gasoline-powered cars. By contrast, it takes nine hours to fully recharge an all-electric Chevrolet Bolt using a 240-volt home charger. Fuel cells cars can also travel further between fill-ups.
READ: Toyota orders worldwide recall of fuel-cell Mirai vehicles
But getting those fill-ups presents the biggest obstacle. Fueling stations cost up to $2-million to build, so companies have been reluctant to build them unless more fuel cell cars are on the road. But automakers don't want to build cars that consumers can't fuel.
The US Department of Energy lists just 34 public hydrogen fueling stations in the country; all but three are in California. By comparison, the US has 15 703 public electric charging stations, which can be installed for a fraction of the cost of hydrogen stations. There are also millions of garages where owners can plug their cars in overnight.
As a result, US consumers bought nearly 80 000 electric cars in 2016 but just 1082 fuel cell vehicles, according to WardsAuto.
That's why automakers will keep hedging their bets and offer electric vehicles alongside hydrogen ones.
Honda began leasing the 2017 Clarity fuel cell sedan earlier this year; about 100 are already on the road. At this week's New York Auto Show, the company also introduced electric and plug-in hybrid versions of the Clarity.
The plug-in hybrid can go 67km in electric mode before a small gas engine kicks in, Honda says. The all-electric Clarity can go 179km on a charge. Both will go on sale later this year.
Vice president of the environmental business development office at America Honda, Steve Centre, said: "We think going forward the powertrain market is going to be very diverse.”
Fuel cell cars create electricity to power the battery and motor by mixing hydrogen and oxygen in the specially treated plates that combine to form the fuel cell stack.
The technology isn't new. GM introduced the first fuel cell vehicle, the Electrovan, in 1966. It only seated two; the back of the van housed large steel tanks of hydrogen and oxygen. It went about 241km between refueling, and its hydrogen tank exploded on at least one occasion.
Advances in hydrogen storage, fuel cell stacks and batteries have allowed engineers to significantly shrink those components to fit neatly inside a sedan.
Oxygen is now collected from the air through the grille, and hydrogen is stored in aluminium-lined, fuel tanks that automatically seal in an accident to prevent leaks.
Reducing the amount of platinum used in the stack has made fuel cell cars less expensive.Honda's new Clarity can go 589km between feelings, the longest range in the industry.
The Clarity leases for $369 per month for 36 months. That's more than the $354 monthly lease payment for the Chevrolet Bolt electric. But Honda, Toyota and Hyundai are all throwing in free hydrogen refueling.
It costs between $13 and $16 per kilogram for hydrogen, or up to $80 to fill the Clarity's 5-kilogram capacity, according to the U.S. Energy Department.
Even with that perk, analysts think sales of fuel cell vehicles will be limited until more fuelling stations are built. But carmakers will still invest in fuel cells. GM's Freese says there are many applications beyond cars, including unmanned, deep-sea vehicles or backup home power systems.
Jack Nerad, executive market analyst, said: "One of the reasons global car companies do something like this is they want to have a finger in the pie. Should we suddenly have to shift over, they want to be able to do it.”
The number of fueling stations could also grow quickly if automakers partner with governments and energy companies, as they have done in California. Earlier this year, 13 companies — including Shell and BMW — formed a council to accelerate the adoption of hydrogen as a transportation fuel.
READ: Nissan bets on ethanol for fuel-cell vehicles
Heather McLaughlin of San Ramon, California, was one of the first customers to lease a 2017 Clarity. She says she prefers a fuel cell car over an electric because she can refuel it in minutes. And one fill-up a week more than covers her 50-mile daily commute to Benicia, where she serves as the city attorney.
She recently drove the Clarity to Southern California and found plenty of stations along her route.
McLaughlin said: "I like the innovation; It helps if we can have more of these on the road."