Hadn't realised the trials were unsuccessful, I suppose covid impacted it, but it had also seemed expensive £1+10p/min;
if you were sane, you have to be prepared with gloves+helmet too, women might need a shoe change.
I haven't seen many in Cambridge, but if it ramped up, the police would be more attentive too.
Don't the legitimate ones have a bar-code, or bluetooth/wireless, so police could check, phone app ?
Chavs were launching them down stairs, riding through shops and doing other stupid stuff with them. So they realised it was a bad idea.