I ordered the Magsafe Airline adapter with my Air and although the Air arrived several days ago, the Airline adapter arrived today. This adapter plugs into the Air at a 90 degree angle, rather than straight on like the old adapter, so it is specifically made for the Air. It comes with a 20mm cigarette style adapter that slides on top of the EmPower port. The magsafe adapter will charge the Air from my car, which I didn't think it would do. The light stays green and the battery icon shows charging. Although the Air charger will not charge my Macbook Pro from my car, it will keep it running. The light that is green blinks in and out and it apprears that when the Macbook Pro power consumption is highest, like when the DVD drive spins, the light blinks off. I wonder what the specifications are on the Airline adapter. Airline adapters are supposed to be for 15v in. My car is 12v to 13.5v in. Anyone know what the voltage is on the Macbook side?