I have noted Apple’s steady movement into mobile computing via the MacBook Air, the iPod Touch and the iPhone in the past. Is there room for a kindle sized device between the phone and the ultra portable? Here are two views:

Between a Laptop and the iPhone – Greg Sterling, Local Mobile Search

Do You Have That Portable in a Midsize? - John Markoff, NY Times

And on a totally unrelated vein:

Fuel Optimization, Geospatial and On-Board Navigation – Mike Dobson, Telemapics

Mike is always a few years out in his vision and very broad in his analysis. Here he talks about navigation software/systems to help solve fuel economy problems.