OH has structural sleep apnoea, basically he injured his nose/ forehead as a preteen, and then took up boxing. 
Anyway I was the worst in the world when I made him go for sleep studies, and when he was diagnosed, I was the queen of mean.
Oh and he too reckoned that he would 'know' too, right up till the consultant asked if he could used his info in a write up as an atypical presenter with serious Apnoea. He asked how bad, and Doc said if he'd seen the results without seeing OH he would have assumed that OH was 60+, life long heavy smoker, heavy drinker, never excerised and at least 4 to 5 stone over weightat least .
At this point OH was in his 30s, never smoked, drank maybe 2glasses of red wine a week. Was running 10 miles 3times a week, and was slightly overweight, but only a few pounds rather than stone.
He has cPAP, it took him over 6months to be able to wear the mask for 6 hours+.
BUT he could feel the benefit after a week, and can really feel it if he's away and can't use it.
He lost weigh, because he wasn't eating to keep awake, he found doing excerise easier, he was fit anyway but finding it hard to get to the next level. He wanted to do more marathons but they were wiping him out for weeks, after 6 months with no change in his excerise regime he did 2 full marathons, in a month and 2 hard half marathons (cross country).
While he still resents having to use cPAP, he will admit that it has changed his life for the better.
From my point of view, I sleep better as his snoring. . . OMG real window rattlers, we can sit and watch a film without him dozing off after 5 minutes, or jumping up so as not to fall asleep. And the machine makes a lovely whooshing calming sound, I miss it when he's away.
Anyway off my soap box and to answer your question. A O2 stat of anything below 95% in an otherwise healthy person for any significant length is wrong it's jumping up to 98 because he's gulping air in.
The pulse rate is very off. I'm a very unfit overweight person and my resting heart rate is 72, which to my mind is still a bit high. OH's resting rate is under 50. (Am ex cardiac nurse)
OH had no issues with diagnosis and driving but IIRC it wasn't an issue because he was being treated, and he regularly drives heavy machinery so we checked it in depth.
Most people who drive for a living zone out occasionally that's why they have enforceable breaks, except he may not be zoning out he maybe having micro sleeps.