As far as Hyundai/Kia’s fuel cell research is concerned, he says that there are a new set of barriers to commercial acceptance on the market. Previously the barriers to getting close to the US Department of Energy (DoE) target of $50 per kilowatt were the hydrogen storage with spun-carbon 700-Bar pressure tanks taking the price well over the DoE’s target. Toyota has started to manufacture its own tanks, but Hyundai is still working with Dynatek for its tanks. Sae Hoon Kim says, however, that while carbon costs are coming down, there are still issues with the costs of the proton exchange membrane and the amount of platinum in the fuel cell. “It’s expensive still,” he said.