"The price and the short mileage per charge are the two biggest challenges we must address," admitted Kazuhiro Yamana, head of Mitsubishi's public relations department.

三菱公共关系部门主管Kazuhiro Yamana承认：“价格和每次充电能行驶的最短里程数是两个最大的挑战，我们必须解决好这两个问题。”

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Already, the industry is making strides, he said, citing Yamana Gold Inc. as an example.

FORBES: USAGX Porfolio Manager Still Upbeat On Gold Prices; Optimistic About Mining Shares

Hill's second-best performer, Brazilian miner Yamana Gold, gained 100% over the course of the year.

FORBES: Magazine Article

Yamana has most of its operations and development projects located in South America, namely Argentina, Brazil and Chile.

FORBES: By Alex L��tourneau of Kitco News