The name ‘Blue2’, which is read ‘Blue square’, is a combination of Hyundai’s sub eco-brand ‘Blue Drive’ and the number `2’ from H2, the symbol for hydrogen gas. Codenamed HND-6, the prototype is Hyundai’s first sedan-style Fuel Cell Electric Vehicle (FCEV). The four-door saloon is powered by a fuel cell electric system that delivers a stack power of 90kW or 121HP and fuel economy of 34.9km/ℓ (of hydrogen, of course), which is equal to 82mpg US and 2.9lt/100km. The concept is also equipped with low-resistance tires and alloy wheels which are designed to improve aerodynamic performance.