How would the world look-economically, politically, militarily, demographically; however you want to look at it-had railroads as we know them (anything beyond the primitive coal mine plate ways) never been developed? The POD is that there is no POD, just plain no one ever thinks of it. Assume that steam power is still applied to water transport and stationary power as OTL and that auto & air transport will come along at roughly their original pace (please explain the reasons if not?).