In Japan, automobile manufacturers are competing with each other to raise the energy efficiency of their vehicles, taking the average of the 10 most fuel-efficient vehicles as the standard.
在日本，汽車廠商互相較勁，以耗能最少的前十種汽車為平均標準，各家摩拳擦掌，努力提昇每一輛車的能源效率。