Thanks to Tim Hillsamer for the link. Lots more here at TECHVEHI but it’s all in French.

I found a bit more info on it in english at the “car body design” site. Apparently the first one is set up to be a land speed bike. Cool!

“The Saline Airstream Concept is a speed record motorbike concept powered by a compressed air engine. It was created by five design students at the ISD of Valenciennes (France).”