Howdy do, Mr. J'...
I don't have any professional answers for you, I'm just a grumpy old man of 48 who had many an odd malady since clear back to grade school; I absolutely relate to the mention of short little, frighteningly unavoidable "NAPS" 2-3-4 seconds - WHILE DRIVING!
Dude... Yeah huh!!! Those will make you a bit sketchy in short order eh! (quivers) I remember needing to begin a 3 hour drive at 3 A.M - dead of winter, kept all 4 windows down, radio cranked to max, singin like a blasted fool at the top of my lungs and rocking back in forth as far as the seat and steering wheel would allow... PRAYING that I wouldn't slip off.
That's just one example of THOUSANDS mate..
I suppose that Sleep Centers can be good, bad, totaly rotten, average - just like every other market - right... It certainly SOUNDS like you have real, "CLINICAL" issues - and issues that NEED to gwet sorted out before you hurt yourself or/and someone else - or worse.
I was finaly sorted out with severe obstructive sleep apnea as wel as narcolepsy with non emotional cataplexy...
Wild as hades yo - I'll be standing there, fully conversational, placing a cup of java in the nuke, and the lights just go out - boom, I fall out - break bones - fingers, ribs, tear muscles - rotator cuff, ligaments; straight up! I've completely thrashed this body these past 4 years! I'd say on average I'm still fallin down and goin boom at least 3 X'sin a 24 hour period X's 3 -4 periods then I regain a firm pattern again for 4-8 days; then back to , "uh oh"!
I used a ton of hard core street drugs back in the glory days tho; I'd be betting that I've just mutated the carp out of the Dopamine, Seretonin and NorEpinephi' factories and distribution terminals - gots all kind of synapz screechin around in this brain pan tryin to go zap - and things just aren't shapin up to code anymore!
After 3 full sleep studies - yes - it did take alot of time and $$$ - I was diagnosed with the above, I'm non tolerant to a cpap, bi-pap, PAPs of any persuasion - my breathing has gotten so bad now that I'm on a constant 4 lpm 24/7 anyhow; but what I found to litteraly be a "LIFESAVER" was a med called Provigil.
I remember back to the High School days when I was jamming a ball point pen into the palm of my hand to induce enough pain stimulation in attempt to just not fall asleep again in a class; just to hear that papermate make a loud click as it hit the tile floor - about 4 seconds before the louder "thump" which would be my head meating the surface of the desk.
Serious stuff J' - get thee to a Physician mon... Hey - can you like rig up a CamCorder on your dash board or something?
Take them in some real video footage evidence: "HERE! This is what MY life looks like - now do you REALLY wanna share a 2 lane road with me"?
PROVIGIL (professional vigillance) ...
They don't know "WHY or HOW it works"; just that it does!