I haven't ever seen a switch on a e-bike. In Sweden you would need a license plate if the vehicle is capable of exceeding the limit of 25 km/h, and operating such vehicle at any speed requires a driver license.

What we got that serve a similar purpose is 4 wheel "e-bikes", also called quadricycle. Basically cars that has their gearbox altered to only use gear 1 and 2, which by eu-classification put them in the same category as e-scooters. Very popular with teens since it allows them to drive without a driving license, and very accident prone. Looking at the statistics, those should require a license to operate.