Meme-Free Zone

Just realised the bleeding obvious, which is that the ship will be a lot slower in the first half hour or so since it has to get moving - either you get up to speed before switching on, or you switch on then start the ship moving, either way it will add significantly to the time it takes for the initial bit of the journey. Which is the way I wanted it to feel - creeping slowly at first then faster and faster, then the "sun whizzing backward across the sky" thing.