Hell, even a regular moped...I had a gas powered genuine buddy 50 in college. That thing had a ~1.5 gallon tank, which I only had to fill up once a week. I got 80-100 mpg depending on how much I had to do. It was insane.
Only issue with gas mopeds is emissions. If they don't have a catalytic converter than the emissions are far worse than cars. Same is true with other small gas engines - lawnmowers, pressure washers, generators, etc.
Fair point. The production emissions make a huge difference. As best I understand batteries still have very high production emissions which roughly balances out their lower runtime emissions.
We have been using out Moped since spring. I love filling the tanks since its at most once a month for $5 for the 1 gallon tank. We use it for 90% of our driving needs in the warm months.
I would be interested in getting an electric model but maybe for the next one.