huh.. is there any way to increase something's mass?
if there is, then you could take it, and do a "bugee jump thing" and launch it around/through your craft, depending on weather your craft was ring or stick shaped.
if you did that enough, you could, in theory, get to c1
waitwaitwait... wouldn't there be all sorts of spacedust, stars, planets, and even galixies to account when using this thing? I mean, seriously, even if we were able to get this thing to work, how do we know that we won't run into half the milky way on the way out? *idea slot* if the bubble were...
Wait, couldn't we just super-quickly-super heat some matter (mercury would be best) and take some magnets to make a wall of plasma that would go directly at the laser/spacedust/whatever and incinerate/obliterate/get rid of it? -αether
Science fiction is there to become science fact...