I compare the C5 to scooters you can get now a days. Like this one: https://skandelectric.com/en/product/sc ... aa03aaca95
That comes in a low power version, 20km/h limited. No licence required, ride on any cycle path, gets up hills fine, even has studded winter tyres available. Or a higher power version, 45km/h, longer range, classed a moped, no problem using on city streets.
Brilliant, electric bike with no stupid peddles.
Or if you feel the need for three wheels and a roof: https://skandelectric.com/en/electric-v ... aa03aaca95
So I see the C5 as a concept way ahead of it's time. Limited by the available motor and battery technology at the time. Ham strung by the regulations at the time. Not to mention British cities had no bike lanes or paths back then. Perhaps interesting and fun but useless.
Me, I'd love to get old of a modern day C5. Like the Aptera: https://www.aptera.us/
Memory in C++ is a leaky abstraction .