I am showing my age here.......
Single tube framed cycles are not new - the Airnimal is an example, aand Klein had a great success with their Mantra Cycles:
There was also a design very similar to this one called the Slingshot that again raced fairly successfully since the early 1980s:
The claimed advantages are discussed at the Company website -
Slingshot Bicycles
Now just to really throw Bonj!
There was also a carbon fibre folding recumbent called the MAKO which used this technology to aid the fold and damp the rear suspension.
and folded:
and a faired recumbent trike:
Unfortunately the price in the late 1980s and early 1990s for carbon fibre made these bikes prohibitively expensive!