Why remain captive to skyrocketing fuel prices when we can develop an economy based on efficient transportation and clean, free sources of energy (like the sun and wind)?

• 当我们能够在高效率运输和清洁、自由的能源（如太阳能和风能）的基础上发展经济时，为什么还要受制于高昂的燃料价格呢？