April 20, 2014
"中でも驚いたのは電車の猛烈な省エネぶり。回生ブレーキ(ブレーキをかけた時に発電する)の利用により、11両編成の山手線の電車、一周して電気代¥1400。"

Twitter / @玉木宏樹 (via twinleaves)

(via itokonnyaku)

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