of the 30 cars I passed on the way to my bus stop, four did not have their phone number clearly marked in the front window. there are several formats available: placard, sticker, tablet, and lovingly embroidered pillow.
I had wondered previously why people answer their cell phone in the temple and other unusual locations; now I think it's because it might be someone phoning about the quadruple parking.
at each educational seminar or conference-type-object, one is handed a book published expressly for the occasion, containing the slides for upcoming presentations, as well as a list of the names, phone numbers and e-mail addresses of all present at the back. the more you know!