‘The only tailpipe emissions are water’: How do hydrogen cars work?

They’re often billed as the next big thing in emissions-free motoring, but how do hydrogen cars work? And how on earth do you refuel them?Hydrogen-powered cars offer an exciting emissions-free alternative to electric cars, making them a hot topic in the automotive industry in recent years.RELATED: Hyundai Nexo hydrogen car – an Australian first drive reviewWhile hydrogen technology is proven and even commercially available, the cars themselves remain something of a question mark. How