I cleaned my entire car, both inside and out, with Windex(tm) and paper towels.
My wife was at a job interview, and I drove her. But for some completely unknown reason I forgot to bring any reading material with me, so I got pretty bored sitting around waiting for her. I first used the near-empty water bottles and stray napkins, and when those ran out I used some kleenex(tm). But that didn’t work really well, and she was still in her interview and I had no idea how long it was going to be. So I went to the store and bought some multi-function Windex(tm) for $3.49 and a roll of paper towels for $0.99.

I first did all the plastic surfaces of the inside of the car. But still, I was waiting. Then I did all the windows, inside and out. But still, nothing. Then the headlights… then the front and back, then the roof, then the doors and finally the sides. Just when I was nearing completion she emerged with a job, and my car cleaning was complete. In case you are ever in such a situation yourself, it may be nice to know that I used nearly a full roll for my little Civic(tm) hatchback so if you’re driving a real hulk you may as well cut some extra trees down while you’re windexing your car.

Except perhaps for the time I got it professionally detailed, I think my car is now the cleanest it has ever been since I bought it.