Nice Car Mount!
Car Mount Windshield Holder
Just got it in the mail today. It's a fantastic fit for holding the Moment sideways, or upright. It doesn't press any of the buttons, and it allows access to the charging port too!
It secures from the windshield or the dash (not the vent), and it's very very secure holding the moment both closed and slid open (exposed keyboard for typing destinations into the GPS).
However, I had to do a slight tweak to mine to keep it from covering the speaker (not a serious task, you only need a screwdriver). I can post easy instructions for making the modification if anyone wants.