However, Mr Pan urges his readers not to scoff. In Texas in 2002 a green technology revolution took place; solar-powered car prototypes averaged speeds of 56km per hour.

• 但潘先生敦促读者,不要对此不屑一顾。2002年美国得克萨斯发生了一场绿色科技革命;由太阳能提供动力的原型车平均时速达到了56公里。