I own an electric bike and want to also add a gas powered motor. Would I still be protected under electric bike laws? And what restrictions concerning cc size, top speed, and bhp would I be looking at?
See the posts under Motorized Bicycles in the tag cloud.
Electric assist bikes are legal if they meet the statutory definition of bicycle.
Gas engine assist bikes are not legal on the highway.
If you have both and are only using the electric assist motor, it would seem to be legal, since you are only carrying an object as you would a package strapped to the bike. But as you will see from the posts, the answer is not clear. Before doing that, I would check with the local police.
Actual use of the gas-assist motor on a bicycle for power on the highway is clearly not legal.