Originally Posted by 10tonhammr
I've got the car dock, which works great, but I don't have a 3.5mm jack to my car's audio system. Anyone know of a good fm transmitter that works well with the atrix's car dock?
<Whoops, as a new user, I can't post outside links>
Search amazon for "GoGroove Flexsmart II"
It's $55 as of 3/24/11.
EDIT: you can also search newegg.com
What myself, my girlfriend, and my dad are all using. It's a little more expensive than some options, but it's worth it.
3.5mm in, 3.5mm out, bluetooth, fm transmitter, usb port for charging (not sure about the amps on it), play/pause next previous buttons, fm/volume adjustment knob. Works great. Phone sync within 5 seconds of car power on and bluetooth on.