I use my wife's car often and on occasion I need to use both a car GPS along with a GPS for Geocaching. She doesn't like suction cup adapters (makes a mess on the windshield). To accommodate her wishes & my need for using both devices, I designed a bracket that, along with a third party CD mount, the 17mm to AMPS adapter and a mount designed by the GPS manufacturer, I am able to have both devices accessible, visible and more importantly, legal as my view out the windshield. My only real knock on the adapter is I wish it were made of some sort of metal, not plastic/composite, thus the 4 star rating. Time will tell if it will stand up under normal usage.
It worked great, we mounted the iPad to the mount then attached it to a mic boom stand and repositioned the iPad as a camera on the presenter.