Hello Pillow:- Ah, sleep and trains two of my favourite passtimes!
In reply to your survey:-
1. I am not a rail commuter, but have been in the past.
2. To be honest, No. The chance to sleep would have been a fine thing
99% of the time my problem was not getting a seat at all. However, I used to travel London-Newcastle a lot and a Snooze-o-matic would have been useful then, but not on East Croydon-Victoria.
3. I have used blow-up neck-cushions before - but they really could be improved for better comfort.
4. Yes I snore and No, I dont care in the slightest.
5. No preference
6. Yes very much, and dont forget a way to reduce light levels with the good old blindfold.
Can I suggest that your high-tech USP would actually be to link the Snooze-o-matic into a GPS so that it would wake you before you arrived at your station regardless of what delay you set the timer to. That is the greatest worry about falling asleep on a train. I think mobile phones are now beginning to carry GPS, so you could run this off your mobile, and not need a Garmin or Trimble.
PS - If you make a £million from this idea, I want 5%