[lunarhighway]

this could be a good thing to beat traffic jams and conjestion, where basically people are already in a roadtrain, only it's not moving... wich in turn gives them the opportunity to do all sorts of things besides driving, wich causes accidents etc....

this system oviously has a lot of technical challenges though but it has to advantage you get from A to B as of you where in an ordinary train, but then can continue on your own way