She said "It was almost like an ad for Red Bull in that he was holding it perfectly upright with the logo facing out."
Kate didn't stay on the Tube long enough to see where he got off, but wouldn't be surprised if he'd missed his stop.
One of my most embarrassing Tube sleeps was waking up just as I pulled into my station, but then stupidly standing on the wrong side of the train waiting for the doors to open. I've seen a number of other people do this, so know that I'm not alone in this disorientation. However, a sleepy woman in Zurich managed to delay a number of trains in her dozy state. She leapt off her train after falling asleep and jumped off before it had pulled into the station.
She said "I didn’t notice we weren’t in the station because I’d been napping. I thought it was a long drop down."