Thanks guys. It seems to make sense to try to get this kind of exercise in from time to time. I should have started years ago - but I was too busy being too busy, and wait time was so valuable I used it for my much needed reading. Nowadays, I can be a bit more constructive
I think it's also important to not look at this stuff as "important", if you know what I mean. The drawings are just simple sketches, little quickie things that are an observational exercise and a bit of quiet, surreptitious fun at the same time.
Some airport stuff, lobby stuff, car dealer wait . . .