LoL. In Florida. Under 50cc is legal to drive without a license. LoL. Even golf cars under 50cc legal. Not sure about electric motors.
In Florida a license is required to operate MBs even under 50cc.
Since this thread is about California Law you may want to join the discussion over on this Florida thread:
https://motoredbikes.com/threads/florida-law-for-mopeds-do-cops-enforce-it.48447/
FAQ from Florida motor vehicle bulletin
https://www.flhsmv.gov/dmv/bulletins/2003/Scooter_fact.htm
Question:
What are the driver licensing requirements for mopeds, scooters and other two or three wheel motor vehicles?
Response:
If 50cc or less, these vehicles are not motorcycles by driver license law definition, FS 322.01 (25), so a motorcycle endorsement is not needed per F.S. 322.03(4). However, to operate them on streets and roadways, you must be at least 16 years old and hold at least a regular operator (Class E) or "Motorcycle Only" driver license. (Reason: even though these vehicles are 50cc or less, they still fall under the driver license law definition of "Motor Vehicles" and a driver license is required to operate a "motor vehicle".) FS 322.03(1), 322.01(26) and 322.05(1).
Question:
Is there a motorized vehicle you can operate without a driver license?
Response:
Yes, if at least 16, you may ride a bicycle with an electric helper-motor that can not go faster than 20 mph on level ground, per 322.03(1), 322.01(26) and 316.003(2).
You can look up the quoted statutes here;
http://www.leg.state.fl.us/Statutes/index.cfm?Mode=Search Statutes&Submenu=2&Tab=statutes