While you should be happy with your new MacBook Air, you should also be advised to get to airports early. Why? Well it seems that some security agents do not recognize Apple’s latest credit card thin laptop as a laptop.
Apparently the lack of standard features like a hard disk (some models) and a DVD drive are throwing some for a loop.
The irony of course is that you may need to get to the airport early to avoid such hassles but the battery is not replaceable.