Gas-Powered Bicycle Kits
Francis submitted this article from the Northwest Florida Daily News.
‘I’m just trying to ride in peace’: Questions arise over motorized bicycles.
In summary, bicycles are being retrofitted with gas-powered helper motors, and law enforcement is ticketing the drivers.
Bicycles modified with gas powered helper motors are not legal on the roads or on the sidewalks. See:
What about electric powered helper motors? Is there a “legal” distinction batween the two?
Yes. It is fully described in the post that is linked in the answer.