I was driving home tonight, and as I'm at the home stretch on Transit Road, some guy in a truck comes up behind me and flashes his lights. We're going around 55mph. He then pulls up to me, and I roll my window down. He shouts at me about missing my gas cap and to turn at the next left. Something was weird about this- my gascap is on my driver's side, so I knew it was there when I got in my car back at work. The guy pulls in front of me and turns at the next left, but I pull forward and go to the 24 hour gas station a mile more up the road. I inspect my car and didn't see anything wrong. What the heck? I look around to see if he followed me here, and get back in my car and head home. I probably should have gotten the plates on that truck, but nonetheless I'm glad I trusted my instincts and didn't stop. I don't know what he was up to, but I'm glad to be home. If it happens again, I'll definitely pick up the plates.