Yes I can agree it is somewhat impractical. But I can envison a small engine turning a Johnson 12vdc motor or a Mabuchi 550 motor for a generator. One would have to gear it down maybe, as direct drive may not work, but it is a compression ignition engine so it should be able to handle the startup speed needs. it might make for a cool looking miniature scale gas generator rig.

I can see someone making a 1/12 scale gas generator. The pull start would be doubly cool with a Cox engine.