Sure there are a lot of very good foldable bikes, that ride a lot better than this grasshopper, but this is under 5kg and takes approx. as much space as two umbrellas (but more confortable to carry and more useful than those blasted things!)

If you’re thinking about moving around the city with buses, trams, subway as part of your journey, this is a lot better than bigger bikes because it’s so light and folds so fast.
Dahon and other 16 inch or 20inch and up foldables are great but not really portable. Too bulky, way too heavy, too complicated, fold slower. They’re good for visiting a distant city by train. (Which somewhat defeats the concept – you can get a full sized bike in special trains)

Disadvantage:
- Smooth road only OR indoor usage (e.g. ground clearance & rolling resistance)
- Uncormfortable to ride over long distance
- Specific usage to ride location
- Flat roads only, no breaks? & gears (uphill & downhill struggle)
- Wobbly joints?
- Design like an umbrella, but cost like any other mid range bike.

Usable locations:
Warehouse & offices, sport stadiums, urban parks & footpaths and some airports (probably few more locations)

Conclusion:
A well considered design and it defy the traditional concept of cycling, but the market is very specific in relation to ride locations (personally I prefer the “IF Mode Pacific Cycles”.)