Social Awkwardness Quiz (Updated)

Below is an actual situation I encountered on Saturday night. Your job is to suggest the appropriate action to be taken. I will update later what my actual action was. Here we go....

On Saturday night, my friend and co-worker, Mike, was hosting a drinking event at a local bar. I had told him that I would stop by for a drink or two and planned on coming around 9pm. Well, Mike called me around 4 pm and asked for a favor. He said he had a buddy coming into town (via airplane) around 8 pm and needed someone to pick him up, because Mike would already be at the bar hosting the event. I obliged, and around 8:15 pm I arrived at Willard Airport in Savoy, IL amidst a rain shower.

I waited for a few minutes, then a young man approached my car (he was told to look for a Kia Sephia). I rolled down the window, asked if he was Mike's friend. He said that he was and that his name was Doug.

So Doug got in the car, and we proceeded to the local bar. The conversation in the car went as expected as pleasantries were exchanged and minimal silence occurred. We then got to the parking lot a couple blocks away from the bar and I pulled into a parking spot.

I was about to turn the car off when Doug commented, "Oh, I think I want to change." I correctly and immediately interpreted that he meant that he had to change all his clothes (he had a suitcase with him) and not just his shirt. If he just wanted to change his shirt, he would have said "Oh, I think I want to put on a different shirt."

Anyway, I looked down the street through the rain and remarked, "OK, I guess we can drive around and try to find a place."

"Oh, I'll just change in the car," Doug replied.

Blam. Social awkwardness. Before me was the possibility that a complete stranger would proceed to take off their clothes and put different ones on in my car with me present. Consider the factors: the rain, the Kia Sephia, a suitcase, and of course Doug.

What is the correct response to this situation?

My action was to reply by stuttering, "Oh....uh...ok...sure." I then quickly got out my cellphone and told Doug that I had to make a call. I made a single, short cellphone call in the pouring rain, then proceeded to wait for 3.5 minutes in the pouring rain until Doug was finished (no shelter was within 100 yards). Awesome.