So, if oil substitutes are not easily available, modern societies should focus on the sources of demand, most of which is attributable to the transport sector. Indeed, more than 80% of modern societies’ consumption of energy generated by oil, either in the form of electricity or fuel, is used to move commuters.
因此，如果石油的代替品来之不易，那么现代社会就应该关注需求的来源，而绝大部分能源需求都来自于交通部门。的确，现代社会超过80%的来自于石油的能源消耗，不论是电力还是燃料，都发生在通勤交通部门。