When I first got it ~15 years ago, my son’s baseball team travelled to Kansas City for the weekend so I figured I wouldn’t bring it. Driving back to Omaha I almost fell asleep 1/2 dozen times to the point it scared me. I’ve only slept one night without it since & that was because because I threw a piece away & didn’t have a spare. That next day I drove to the pharmacy to get the piece because it would have taken a couple days via mail.
If you’re not having those types of experiences, I would agree a machine prolly wouldn’t help.
Oh I do get extremely tired driving even just say 60 miles or so. And yep, I begain to nodd off quite a few times to point it scared me too. That was why they thouhgnt I had sleep apnea- and why they told me I’d ‘feel amazing’ after a few nights sound sleep. It never happened for me though. I just kinda suspected from the beginning that I never had it.