3 ms·The wheel, of course.by udfalkso 17y agoThe wheel, of course.cubicle67 17y agook then, how would you do it differently? :)skermes 17y agoAs a hovercraft, of course. If we'd started the history of transportation by floating instead of rolling, I think we can all agree humanity would be a much better place right now.pegobry 17y agoYes, those Stone Age hovercrafts were really something. ;)