Upright bicycle efficiency & seat movement
When I consider all the claims made, I believe they are probably true and verifiable... Not once do they tell you what they are comparing their product to, they lead the reader to presume...
&quot;You ride faster and your quadriceps have to work less.&quot; - compared to what?  Walking
&quot;- If you have a Kwiggle with you, you will explore cities and landscapes faster, further, more independent and more flexible.&quot;  - Key is is the first word - &quot;If&quot; followed by faster/further/more independent than what? Obviously, if you have their product with you, you almost certainly won't have a competitors product with you.
&quot;The standing position is also unique in the world. You get more force onto the pedal.&quot; - More force than doing what on what? If you stand on a regular bike, you have the same position and same advantages, but you set the saddle up for more efficiency - by pedaling faster with less force (i.e. spinning - which is more efficient when trained)
Every one of the claims falls into the same kind of questionable claim. Probably spend a fortune on legal fees ensuring they don't breach various consumer protections laws around the world.
Note - this is a essay on the sales claims of the product and makes no assessment of the product itself.