Does This Kind of Stuff Happen to Other People?

What would you do if you were sitting at a stop light with your windows down and heard a voice say, "What's with the (insert make and model of your car here)?"

Well, if you were me, you'd know without a doubt that your car is the only one that could possibly be referenced, because only about six people in your small town even drive this car and none of them are at this stop-light at this exact moment, except you, of course.

So, you would turn to find a man in, of course, a white van with no markings and no windows past the front two.
(Is anyone else immediately terrified by this kind of vehicle?)
And the man would be literally leaning out his window toward your car and saying "No air conditioning?" while he actually could be driving ahead and not holding up traffic because he has a green light.

You, who are turning left, do not have a green light, and must stay right where you are and carry on a civil conversation with this man, so you say "Nope, no air conditioning."

He proceeds to say "I'm so sorry about that."
You just say "I'm fine" and glance significantly at the light just in case, in all this time that he's been sitting here, he hasn't noticed that the light is green.
He finally gets the message and drives on.

Okay.  What would you do at this point?  I immediately looked around the inside of my car to make sure nothing was missing.  Am I too paranoid?  Is that crazy?
I mean, that poor man was probably just wanting to be nice and friendly.  But he was holding up a line of traffic at a green light . . . Just in order to be nice and friendly?
I don't know.  It was weird.  But every time I have an encounter like this, I leave it feeling like I am entirely too suspicious of people in general and need to have more faith in humanity . . . And work on my "I-am-a-strong-and-confident-woman-and-you-shouldn't-even-think-about-messing-with-me" look.