You're at a red light, and notice as the cars go by that the sun is just right, so you call the wife and ask if she's in the area and can make a few drive bys.
I did my neice's car, and as the final after 9 hours I got out the tire guage. 50+ in two tires, 20 or so in the other two. "Well, I noticed those two were low, so I put a lot of air in them" I had her drive me over to the gas station and fix all four.