Going to the Andromeda Galaxy at this acceleration would require 4 100 000 kg fuel per kg payload using the unrealistic assumption of a 100% efficient engine that converts matter to energy. Decelerating at the halfway point in order to stop dramatically increases the fuel requirements to 42 trillion kg fuel per kg payload. This is ten times the mass of Mount Everest required in fuel for each kg of payload. As the fuel contributes to the total mass of the ship, carrying more fuel also increases the energy required to travel at a certain acceleration and extra fuel added to make up for the increased mass would further contribute to the problem.