My gf and I have been exploring local parks and trails (just casual biking and scenery not really hardcore health nuts) and have really been enjoying them on our new ebikes (Swagtron EB5 Pro+). It can pedal like a normal bicycle, has pedal assist mode, or full electric (15 mph top speed and 15 mile range).
My favorite feature is that they can fold and fit inside the car; I hated using trunk-mounted bike racks in the past.
The one in the middle is just a parking lot toy lol.