I’m hoping to resume focus on green transport and realize that a specialist website may serve this purpose somewhat better. Therefore please see here for a new site currently under construction devoted entirely to transport:

https://wordpress.com/view/transportability.wordpress.com

I no longer promote the use of ewheels given that manufacturers are now making them with top speeds of over 50mph which is obviously completely unsafe. So focus is likely to be on scooters and urban commuter systems.