Yep. 30 mph or even 28 mph in CA without pedaling is breaking the CA Ebike law. Can only go 20 mph here on a throttle. 28 mph Class 3 you need to pedal.
I call it dangerous. People are used to seeing a bike and they know it''s a bike, and can gauge their speed because it's a bike.... until it's going really fast, silently.... all of a sudden there is an accident.
So many new ebike riders think they want the speed, but in reality you get the best battery mileage at 15 mph. Over that and the wind resistance hogs your battery down fast.