Why would an iPad be more convenient on a plane? Well, cramped conditions make it almost impossible to use a laptop in cattle class. But no such problem for a smaller device like an iPad (or, I find, a netbook - 2x3hr batteries for my netbook meant I could spend most of my SFO-London flight hacking, writing e-mail and drafting blog posts - I do use mutt and vim: if I were using Word and Outlook, a 1024x600 netbook with a crappy little trackpad might have been a bit too restrictive for me).<p>If the iPad gets the ten hours it claims, it may be perfect for frequent flyers who want their own music, video and books, and a bit of e-mail reading and document perusal on the side.