I personally think it could be a great alternative to cars and bikes for those who need to take a whole family somewhere or a decent amount of stuff.
Only modifications I would make would be ride-by-wire and an extra set of pedals (so you can have two people pedalling without the annoyance of normal tandem bikes having to pedal at the same rate), and a more powerful motor (only 250W is legal in France, where this was designed, whereas 500W is legal here in Canada)
It’s OK… I’m more in for this rig
https://www.greenenergytimes.org/2014/06/rhoades-car/
Driving with a mate, he/she can have a beer and we cruise along. But a tray in the back to go to the Hardware store and pick stuff up.
I’ve seen them locally but no solar, only pedal power. Even had the drink holders in the console and a key for the lights 😅