I'm not saying you have this but, friend of mine has head trauma from childhood. She is also zoning out at times and a doctor finally realized it's a real thing and sent her for testing. Her EEG shows she has what they used to call petit mal epilepsy, today this subgroup is much more branched out. My friend had some learning issues in school, just because part of her brain literally slept a few seconds here and there. Goes into waves only seen when you are asleep.

I'll warn you though as you mention driving, if you have disturbances showing up on an EEG it might or might not effect your ability to get a driver's license.

My friend was put on meds but she wasn't happy with those and stopped. She has less episodes if things are chill, she tends to have them several times a day if she is stressed out.