I think the first two are dead-on, and (should be) obvious to anyone. I really wish people just understood some modicum of basic manners...I pretty much feel that in any public place where people are obviously trying to keep the noise level down, or else someone is performing/instructing/etc - phones should be off, or on vibrate at the most.
The calling the car thing I'm less worried about, if you 1. have a speakerphone, 2. have a headset.
edit: ps. sounds like someone needed to rant
