https://blog.wongcw.com/2020/04/29/%e7%a0%94%e7%a9%b6%e7%a8%b1%e7%84%a1%e4%ba%ba%e6%a9%9f%e4%ba%a4%e4%bb%98%e8%bc%83%e8%b2%a8%e8%bb%8a%e5%a4%9a%e8%80%9710%e5%80%8d%e8%83%bd%e6%ba%90%e4%bd%86%e4%bb%8d%e5%85%b7%e6%9c%89%e4%b8%80%e5%ae%9a/
研究稱無人機交付較貨車多耗10倍能源但仍具有一定的環保和成本優勢