Good post nsherry...this looks very interesting, I wish it had been available for me when I needed cpap a few years ago.....
http://www.cpap.com/productpage/tran...somnetics.html $499
The multi-night battery is extra $275 and looks like you can get two nights out of it before recharging,
http://www.cpap.com/productpage/Tran...t-Battery.html
and you can order optional solar charger for $225 and weighs under a pound.
So, for a total of $1000 you can get freedom from being tethered to a wall outlet.
For some people, a cpap is going to be a forever thing. For others, myself included, all it took was to stop being obese and take up yoga and hiking. Everybody´s situation is different, so don´t be quick to judge someone if they need a cpap, its their hike, let them hike it their way.