In 1984, France unveiled a revolutionary new vehicle, a giant beast designed to push canalboats up a 400m-long water slope, thus avoiding the time-consuming use of traditional canal locks. Did it work? No.

Footage of it working (briefly) in 1990:    • The Waterslope at Fonserannes in Augu...  

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IMAGE CREDITS

Béziers rugby match - https://commons.wikimedia.org/wiki/Fi...

Fonseranes diagram - https://commons.wikimedia.org/wiki/Fi...

https://commons.wikimedia.org/wiki/Fi...

Montech machine - https://commons.wikimedia.org/wiki/Fi...