The Targus car adapter is really an iGo
This Targus Auto/Air 40W DC Power adapter for DVD players and Sony PSP game player is simply a relabeled iGo Auto/Air Power 40. This kit has the same D00 power tip that fits perfectly into the XO power jack. The Targus label on the other side even covers over the blue power LED. Peel all the labels off!
These are discontinued, but can be found around the web refurbished or on eBay.
See my photos of the iGo