If e=Mc² and the logic of Relativity is clear to you, it would be foolish to accept that everything is relative, and applicable to all aspects of life, even morality. What then would eπ²= be to you? There are too many equations to be considered that form a larger whole. Taking just a part of a much larger complex whole, and applying it as the answer to all ,would render it flawed. A precise and correct outcome is favored when dealing with such matters and seeking answers. A advanced electromagnetic vehicle that can attain the speed of light and beyond should experience no centrefugal forces due to time-dialation. The occupants will experience normal forces and speeds whilst travelling at a normal time zone. The observers will see the craft make high speed 90 degree turns and concluding that it would be impossible due to known physics of centrefugal forces.