Research shows that consumers don't want to let go of any traditional product attributes, like convenience, price and quality.
研究表明，消费者不愿放弃任何传统产品属性，比如便利性、价格和质量。
2
Research firm NPD estimates that fewer than 5% of consumers buy a spare.
研究公司NPD估计，只有不到5%的消费者会购买备用电池。
3
Those improvements are providing comparable benefits to electric vehicles at a lower cost, but the Center for Automotive Research cautioned that consumers still will resist increased costs.