I used to work for the company. I came on during the pivot to scooters, so this is just my (probably wrong) opinion. IMO the reasons it never took off were: -

I used to work for the company. I came on during the pivot to scooters, so this is just my (probably wrong) opinion. IMO the reasons it never took off were: - Expensive. You can get an electric bike conversion kit for $500 or less, compared to $1000+ for the Copenhagen Wheel. Don't get me wrong, the engineering on the Copenhagen Wheel was amazing, definitely worth the extra money, but it was too expensive for delivery guys to use. - No replaceable battery: again this rules out delivery guys, as well as all-day rides. - Requires a smart phone to use it. This was the biggest reason I stopped using my Copenhagen wheel. You needed to use your phone to unlock it or change the speed settings. I don't want to need my phone to ride my bike. What if I lose my phone or the battery dies? What if the server goes down or the company goes under?