Not Route 9 specifically but something similar happened to me on the A595 near Egremont about two years back. Left a location shoot around 11pm, know I filled up at the Tesco in Whitehaven before heading home - have the receipt to prove it - and somehow didn't pull onto my street until gone 2am. That's a 25 minute drive on a clear night.
Weirdest part? I wasn't tired, no memory of pulling over, and my EMF meter (was still in the passenger seat from the night's investigation) had gone absolutely haywire according to the data log. Full spikes right around midnight.
Nobody believed me for ages. Still not 100% sure what I believe myself tbh.
A few things worth asking about your Route 9 experience:
Do you have a dashcam? Even if you don't remember anything useful, the timestamp gap would at least confirm the missing time, Any physical symptoms after - headache, nausea, unusual marks?, Was anyone else in the car with you?
The corroborating witness thing is always the killer with these accounts, isn't it. Without someone else in that seat it's so easy to dismiss as nodding off or zoning out. Which, fair enough, except that doesn't explain my fuel receipt and the EMF data together.
Would love to hear more detail about yours. What time did you set off and when did you arrive? And did anything feel off before it happened, or just suddenly you were further down the road than you should've been?