While it may sound disgusting, TOTO’s – Japan’s largest toilet manufacturer — Toilet Bike Neo is as efficient as they come and that’s because it’s powered by human waste. Believe it or not, this vehicle features a built-in toilet which is used to feed it biogas. Continue reading to see it in-action and for more information.

Contrary to what you might think (and who can blame any mind for wandering in that direction), the retro steed runs not on human “output” from the unfortunate rider, but on biogas brewed from animal dung and household wastewater.

Um, and it also comes fitted with a tiny talking latrine on the handlebars, a nightclub-style “air-writer” LED device for leaving bon mots trailing in its wake and a high-end sound system.

[Sources 1 | 2 | 3]