Engineering360: "A new French e-bike doesn't need a battery"

Electrolytes aren't chemicals?

Call me a pessimist, but I think they use too many words to describe this e-bike and convince us that it is a good thing. I'll wait to see what develops; besides, it is likely much too expensive for me.

Reads like marketing bumph entirely devoid of any technical content. How far up what grade hill can such a bike go? How long do the supercapacitors last before they need to be replaced? How long does it take to charge the supercapacitor? How are supercapacitors manufactured? What materials are required to manufacture supercapacitors?