Good afternoon,
Wait until you see Di2 Toe Clips, straps and shoe plates.

A small motor tightens or releases the straps and raises or lowers two vertical plates to restrain the foot around a vertical face at the rear of the pedal.
These are new to me, but looking at various photos the bars are the pedals and imagine
https://fairwheelbikes.com/aerolite-titanium-pedals/ with the cleat split into 2 pieces and only the rear half used.
I first thought that the pedal bar sat under the metal spring plate but it seems that it sits over the spring plate with the spring plate providing compression between the shoe base, the pedal bar and the curved cleat. This curved cleat seems to encase around 160degress of the bar which seems at first glance to be surprisingly little.
Their site says
The cleats are available either standard or with a 5-degree float for optimal fit. The easy to engage cleat system allows you to maximize watts and get 3-4 power strokes ahead of the pack at every start! (Please note some videos and images show a steel cleat, our production models will be a lightweight, durable glass-filled nylon polymer!)
Is it worrying that all the prototypes use aluminium or steel and the production ones change the cleat material that dramatically?
There is/was even take about special shoes designed to make walking easier, given the nature of the binding mechanism and the new polymer for the cleats it is not clear if walking any distance is practical.
How much? Still not sure.
It looks like they couldn't come up with a better system than SPD so they improved/reinvented an idea from the 1980s, yup Aerolite is that old. :-(
Bye
Ian