"You've got to be able to haul your "stuff" around...."
Buy two, and tether the second one behind as a trailer. I betcha you can link as many as you like into a train by running a "bus" cable from the lead vehicle that would serve as a controller, and daisy-chain the trailing vehicles. Just speculation, but I would not be surprised if something like happens.
I'm thinking... lash four together for a "car" pool. A "segpool" maybe. Wonder if you could use the HOV lanes that way?