I have several car charger to usb adapters. For apple devices, for nokia phones, etc. None of these work with the usb charger cable that comes with the N900. The N900 charges just fine when the usb cable is connected to a PC, but does not work with any of the three car charger to usb adapters I have. I guess that all of us N900 owners will need to buy dedicated car chargers for the N900. Anyone else with an N900 have a working car charger?