Amateur so go easy on me. Let's say you're traveling so close to c that you are only 1 planck length/planck time slower. Seems like you have to increase speed in increments of planck lengths/planck times (correct me if I'm wrong). Presumably to go any faster, you'd have to skip right to c since you can't increase speed by half a planck length/planck time. But since you can't travel at c, what happens to the energy if you accelerate? What about this situation would cause zero acceleration when applying thrust? Would all energy go to increasing mass and none to velocity? I suspect it has something to do with how much energy it would take to go this fast in the first place. Seems like it would take almost all of the energy in the universe to the point where the lack of remaining energy becomes relevant. Would something prevent more energy being applied in this situation, maybe because there's simply none left or the amount that is left cannot be accessed for thrust? Any thoughts?