I've been recently travelling with several friends for a long trip. It was very fun to see how you cannot use any recent macbook or an ipad as a "portable" computer anymore, as you cannot swap the battey with a fresh one. Sitting on a power source while waiting for the thing to recharge is also very fun when you know you could be able to just pre-charge another one.

Very sad in my opinion, as the swappable battery is essentially what makes an "appliance" portable. Recent mp3/music players, phones and pads have basically the same issue. You can't simply continue to use the device while the second battery is recharging.