This is a bit hidden in the Windows Phone Store - Nokia Car App
It's a stripped-down start page that gives you the time and date, current and next weather, and battery charge and three big customizable buttons - all easy to see and jab with a finger while you're driving. You can customize the three buttons with nearly any app - the ones you use while driving such as navigation, music or phone come to mind. You can program the phone with up to five Quick Call numbers.
Obviously it doesn't have to be used just while driving. You can use it in any specialized setting such as at home or work, anywhere you use the same few apps.
Start it with NFC automatically in your car, at your desk, or on your couch.
BTW it's free and probably only works on Lumia devices.