Is it intended to be a replacement for the laptop? Or is it a supplement to the laptop, filling a previously unseen niche between the phone and the laptop?
Imagine you're in a VC meeting and you're doing financial projections. You could all stare at a big screen, or you could put one of these down in the middle of the table, say "here, let's work on it together!" and you're away.
It's all about the form-factor and the utter reliability. This is a great replacement for a road-warrior meeting laptop - what the MacBook Air was trying to be - and it's the ideal computer to buy for your granny or your kid brother who wants to check their email and write the odd letter.
(Much less use if what you do on the move is program, but that's OK. It's not aimed at you.)
Plus the iPad would probably be a nicer device to have with me on the plane...