There are, although it's a bureaucratic palaver in the UK getting them registered, taxed, insured and legal. And then they, like mopeds, aren't allowed on cycle

There are, although it's a bureaucratic palaver in the UK getting them registered, taxed, insured and legal. And then they, like mopeds, aren't allowed on cycle paths or in cycle lanes... In short, losing much of the freedom that makes bicycles such fun.