I've got a ClicGear 8 and love it. I have most of the accessories for it and it folds down to nothing. But I want electric with a follow me feature. So I bought this.
eWheels V2: Turn Any Pushcart Into A Smart Caddy.
https://www.indiegogo.com/projects/ewheels-v2-turn-any-pushcart-into-a-smart-caddy/x/2747737?utm_campaign=contribution_receipt&utm_content=receipt-campaign_link&utm_medium=email&utm_source=lifecycle#/
Waiting for delivery now. It's got a follow me feature with a tether, a removable battery so I bought an extra one. Gyroscope to keep it on track and of course the remote control. Best of all I get to keep my ClicGear 8.