Well, it's cerainly a logical extreme. I'm not quite sure why you'd have to be locked in position, though. Versions could be created specifically for characters without appreciable biological functions, but otherwise you'd need to devote at least a bit of mass to the canonical Very Space Efficient Life Support.
I'd think that there would be a small but appreciable number of relatively normal folks with the psychological wherewithal to go for a while in one of these things without going absolutely mad. Adding a touch of mass for an onboard Ai, so that you have someone to talk to, would help.
Just to be arbitrary, I'd say .4C for the totally stripped-down version (you'de better be a robot that masses like a human) and .3C to .35C for the deluxe model (life support, a space-efficient AI to interact with, and a few other small-but-handy add-ons to help keep you sane and functional during the trip.)
I'd think that there would be a small but appreciable number of relatively normal folks with the psychological wherewithal to go for a while in one of these things without going absolutely mad. Adding a touch of mass for an onboard Ai, so that you have someone to talk to, would help.
Just to be arbitrary, I'd say .4C for the totally stripped-down version (you'de better be a robot that masses like a human) and .3C to .35C for the deluxe model (life support, a space-efficient AI to interact with, and a few other small-but-handy add-ons to help keep you sane and functional during the trip.)