Another option might be pulling out all the seats but one and having an emergency low berth with a timer. (For making a low LS requirement trip)
Not something you'd do voluntarily, but might be interesting in a solo game.
You would need an enclosed air/raft for that option, You have to get into the low berth in you skivvies, after all.
As to the timer, well . . . depends on the low berth rules you're using. The early low berth rules were very dodgy. You wanted to very fit (high Endurance) and have assurance that a competent medic would be standing by at revival. If you read the Dumarest series by E, C. Tubb (particularly the first book The Winds of Gath), you will clearly see that Traveller low berths were modeled on Tubb's vision of this technology. It's only the truly desperate who travel this way.