It is possible to do it. I bet you could find a way to mount a jackshaft kit on the link bikes. Maybe get a cruiser from them and mount a motor a jackshaft kit and see what happens. I' pretty sure it would would work but for how long till it gets torn up.
I saw they even have one with the shimano nexus hub on it. Anyone willing to fork out the cash and try one? I would but won't have the extra money for a while.
Look Mom No chain!