Accelerating 1g constantly is much more difficult than it sounds. You'd need a practically infinite fuel source or some way to generate fuel while traveling. Th

Accelerating 1g constantly is much more difficult than it sounds. You'd need a practically infinite fuel source or some way to generate fuel while traveling. That's why the EM-drive was so tantalizing. If we could [near] perpetually generate even the smallest amount of thrust, the implications would be unimaginable. But for now this seems impossible.