After being a complete dipstick and leaving my Targus adapter on an AA flight over the weekend, I ordered an Igo Juice last night from
www.newegg.com . The price on the Igo website is $119, but Newegg had the exact same model for $69.93, no tax, including shipping. It comes with several adapters including those for the IBM T20/30/40 families of laptops.
Sounds like this is a great unit, eliminating the need to carry an air/auto power adapter as well as the stock factory AC adapter.