That sounds very concerning for his safety (as well as yours and the public), regarding his driving. Living with someone experiencing cognitive changes that occur sporadically gives us false reassurance that things are not that bad. I would encourage you to talk to your husband about your concerns and recommend that he see his healthcare provider ASAP. I imagine you may get pushback from him, but you may regret it in the future. I am a retired healthcare provider who has seen this exact scenario frequently. Your husband may be more amenable to seeing his healthcare provider now since he realizes he is having difficulties. If his symptoms worsen, he may not realize this and refuse a visit. I am sure this is very stressful to you, and I wish you the best.