http://gigazine.net/news/20170817-google-map-q-and-a/

http://www.tokyo-np.co.jp/s/article/2017081490070351.html

http://www.sankei.com/premium/news/170817/prm1708170008-n1.html

https://headlines.yahoo.co.jp/hl?a=20170816-00000063-jij-soci

https://twitter.com/asozan_daifunka/status/898072605940367360 https://twitter.com/asozan_daifunka/status/898075565248323584