Hmmm.... the car charger I have is basically a USB to Cigarette lighter adapter. It's 3rd party, and any USB cord fits into it. Maybe just grab one of those? I'm assuming it'll still work with the new phone, since only one end of the cords are changing.
That is what I'm trying to avoid, either having to buy a second cord identical to what comes with the phone or having to lug my cord around. I would rather have a dedicated cord for the car because I will be dumping my ipod and just use the iPhone for my in car mp3 player. I have to stop by the Apple store anyways when my phone shows up since the Applecare is much less than buying the protection plan through Verizon, so hopefully they will have them by then. Verizon always runs deals on accessories, but they didn't have either a car charger or the case I wanted when I ordered the phone, so they lose out.