Originally Posted by Somniferum
Here's another option for a car dock
that's custom made for the Droid Maxx. They also make one that fits with a case. Found this via the Droid Maxx Google Plus group, haven't tried it myself but am considering it.
I bought one of these Kenu Airframe docks. The Maxx *just* fits with the bumper case on. I haven't used it yet, but I may be using it this weekend. The only think I'm worried about is the weight of the Maxx in a dock attached to the vents for a long trip...
Amazon.com: AIRFRAME Portable Car Mount Phone Holder: Automotive
By the way, I was just using Amazon for the convenient link - I wouldn't order from Amazon if you have an Apple Store nearby - they definitely have them there, for about $25. Maybe Brookstone in malls has them too?