My essay on iPhones and American mobility was just made available on academiccommons.org. At a recent executive briefing that I attended at Apple's campus in San Jose attendees were promoting the growth in mobile learning. There's a lot to be said for learning-on-the-move and the 2010 Horizon Report brings the trend to light. But some types of learning are still facilitated by more place-bound activities. I explore these tensions in the essay.