Are bicycles environment friendly if you consider the energy required to produce all the food eaten to fuel the ride? - Quora
X 上的Vélogik:「Calories perdues, bicyclette la + légère ou la + chère : les chiffres et records détonants du vélo, un univers qui roule ! - merci @MyZap ! https://t.co/elbV5PrIzE」 / X
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