Plastic Bike Design

Recycled plastic bicycle design - this seems pretty clever but I have my doubts as to how pleasant it would be to ride.

None of the comments seem to have been made by anyone who knows much about bicycle design.

The first thing I see is that the steering tube is quite upright, which might be fine for a racing bike but for something like this, it would make it twitchy and requiring more attention to control. It doesn't help that the handlebars are so short.

Can this really not have any metal in it? It would be pretty amazing if you could have crank arms (that connect the drive system to the pedals) that are just made out of plastic that would support an adults weight and transfer power reliably.

It appears that the pedals are relatively spread apart - usually there isn't much variance in the distance left and right of center that the pedals are. A larger distance ("Q factor") is apparently less efficient.

Is the height of the seat adjustable? Doesn't seem like it. That's probably the biggest problem.