Korean carmaker Hyundai is about to leap from budget option to one of the car industry’s technical powerhouses in the space of two generations. While the German premium brands continue to develop, tease and promise hydrogen fuel-cell cars, Hyundai is already promising to deliver its second-generation model by late next year. Its ix35 Fuel Cell car beat Toyota’s much-hyped Mirai on to the road by a matter of weeks and the mass volume brand is…