Is there an adaptor to use your iPod in your iPhone in your car?

You mean a power adapter: like this http://electronics.pricegrabber.com/portable-device-accessories/m/26198457/search=iphone+car+adapter

Or do you mean a bluetooth/hands free system?
 

I've been told that any for the iPod will work, but you need to set your iPhone on airplane mode.

Hey, I just wanted to see if you would post a pic of you with your iphone.  I started a simple site where we post pics of people and their iphones.  Its called myiphoneandme.com    You can go to the pics page directly by clicking here.   http://myiphoneandme.com/gal/main.php.    We are trying to spread the word as well so if you know anyone with an iphone please send em our way. I am really trying to get a huge collection of pics.

Thanks

Jon