[msmitha]

These all look like they are petrol powered, right down to the filler cap on the petrol tank.

[gus_massa]

I agree

from https://en.wikipedia.org/wiki/Autoped

> The Autoped was an early motor scooter or motorized scooter manufactured by the Autoped Company of Long Island City, New York from 1915 to 1922.

> The engine was an air-cooled, 4-stroke, 155 cc engine over the front wheel.