Didn't personally drive Route 9 last Thursday but I've been tracking a cluster of missing time reports along that whole corridor for about two years now. Three separate incidents, all within roughly a 4-mile stretch between the Wareham junction and the roundabout near Bere Regis. Different people, no connection to each other.
What I'd want to know is whether you noticed anything with your vehicle afterwards - electrical glitches, clock being out, anything like that. Also whether you felt unusually thirsty or had a headache when you came back to yourself. Those crop up consistently in the accounts I've collected.
That stretch sits on a pretty significant ley alignment running roughly southwest to northeast and I wonder if theres some kind of localised field effect at play, not necessarily extraterrestrial in origin but possibly something that interacts with whatever phenomenon produces these experiences. Worth mapping properly.
Anyone else in Dorset or south Hampshire who's had something similar on that road, please do post up. Even vague details help build a picture.