Never the wrong airport (yet), but I once got into the wrong car.

It was later at night at EWR, and the driver must not have heard me when I asked "Are you ABC Car Service?, because he replied yes, took my bags, and we were off.

I should have suspected something when he had the wrong address, and I had to direct him to right highway to my town. Although I was not amused at the time, it actually was funny how the mistake was discovered.

The driver's cell phone rings, and here is conversation, as I could hear from his end.

"Hello?"
"What do you mean, I picked him up already, he's right here."
"Ok, Hold on"
(to me) "Are you Mr Jones?"
(me)"No I am JohnneeO."
(back to the phone) "Uh, I got the wrong guy, tell Mr. Jones I'll go back to the airport and get him."

So now we need to go back to the terminal, where my car was still waiting for me, and so was the guy whose car I took. We switched cars, I got home 30 minutes later, and now its funny to look back on, but man I was upset that night.