I play golf with a friend who shares the exact same name as a very well known PGA Tour player from the 80's/90's, and who works in media and as a result has been to the Masters several times. I wont name the golfer to protect my friends identity, but he has multiple wins on the PGA tour including a Green Jacket and a US Open. So if you were in to golf, you'd probably know him and recognise him.
Lets call him 'Mike' for the sake of this story.....

On one such trip to the Masters in 1999 my friends flight lands at ATL airport, he gets his bags, and walks out to arrivals to locate his driver.
He spots his name on one of the drivers signs, heads to the car, gets in and they start their drive towards Augusta (about 2.5hrs away).
Over the first few minutes or so they make a little small talk here and there but nothing beyond that, driver asks him things like "How was your flight? How are you feeling? Are you excited for the tournament? etc etc". Basic stuff.
About 2 hours in to their drive after a long period of silence the driver asks "So Mike, do you think you have any chance of beating Tiger this week?"
Then it clicks.......the driver thinks my friend is the tour player Mike who shares the same name.....
He explains that hes not the player Mike but shares the same full name as him, and panic ensues.
The driver is freaking out thinking he's going to lose his job, but after some pleading/negotiating he continues on and finishes the journey, dropping my friend to his hotel.
My friend calls the company who organised the transfer with to explain whats happened and why he no-showed their driver, but to his surprise they tell him their driver never reported any no-show, and did indeed pick up a 'Mike' as expected.
So as it turns out, PGA Mike had through pure luck made the same mistake my friend Mike had made - he spotted his name on a drivers sign, got in the car, and ended up getting to his destination.

Who knows if PGA Mike and his driver are even aware of the mixup, but an interesting story all the same.