46:2.4

The transportation system is allied with the circulatory streams of energy movement, these main energy currents being located at ten-mile intervals. By adjustment of physical mechanisms the material beings of the planet can proceed at a pace varying from two to five hundred miles per hour. The transport birds fly at about one hundred miles an hour. The air mechanisms of the Material Sons travel around five hundred miles per hour. Material and early morontia beings must utilize these mechanical means of transport, but spirit personalities proceed by liaison with the superior forces and spirit sources of energy.