As we promote the need to reduce emissions at the tailpipe for cars, trucks, and buses, we may be neglecting the full story on what this might mean for achieving a broad set of sustainability goals. While not denying the merits of reducing tailpipe emissions, there are many unresolved questions about the indirect emission impacts as well as other sustainability impacts such as traffic congestion. This short paper attempts to place the debate within a wider setting if only to achieve more than what we see governments at all levels including the political process and the bureaucracy that serve politicians, too often myopically focussing on. This paper has many objectives, one of which is to confront the mistakes and biased analysis commonly provided by many, but not all, governments, and to highlight the contributions that should be made by independent thought leaders.

当我们提倡减少汽车、卡车和公共汽车尾气排放的必要性时，我们可能忽略了这对于实现一系列广泛的可持续发展目标可能意味着什么的完整故事。虽然不否认减少尾气排放的优点，但关于间接排放影响以及交通拥堵等其他可持续性影响，还有许多未解决的问题。这篇简短的论文试图将辩论置于更广泛的背景下，只是为了实现比我们所看到的各级政府更多的目标，包括政治进程和为政客服务的官僚机构，而这些目标往往是短视的。本文有很多目标，其中之一是正视许多（但不是全部）政府通常提供的错误和有偏见的分析，并强调独立思想领袖应该做出的贡献。