Since I did the Android part already, here's a quick share on some of the elements. You can probably experiment with this on your phone quite easily.
There are 2 parts to this:
1) Building the screen background with all the graphics
2) Software - a bit of trial and error here (in next post)
Here's the first part on the screen background, which you can build in any decent Photoshop or equivalent software. It's just a matter of adding layers for the icons and labels. Here's what I did:
Got the background from mp3 car forum (
Link). Just need to search a bit to find one you like from anywhere I guess.
Base background:
Here's my layers - I would suggest using software that allows you to add them in steps, so it's easy to back and change/amend any item later. For example, you can replace "weather" with "mail" quite easily if the text and icons are separate layers. (I use a package called GIMP on my MAC, which is the freeware equivalent of PhotoShop)
Layers added at each step:
For the icons, I simply used Google images to search for them. Make sure you find vector based images, so you can paste with a blank background. For example: search for "white radio icon vector". Took me a few hours to find everything.
For text, I chose Helvicta font, but that's just preference.
Happy to share actual GIMP source files, if anyone has a MAC and wants them, instead of searching for the icons and images.
Software used - all from Google Play Store:
1) Nova Launcher to replace the stock home screen. Gives you a blank new home screen and some customization options.
2) GMD to autohide the Android softkeys (i.e. the 3 stock Android virtual buttons)
3) Desktop VisualizeR - this creates "blank" or invisible shortcuts on your home screen for any application. This is how you overlay all the apps you need on your Photoshopped background created before this.
The rest is basically experimental and up to you. I loaded Autosleeper so the tablet goes on with Ignition power and goes to sleep when I shut down the car. No need to hit the physical power button. Clock, weather widget, virtual sound control, etc are all up to you - lots in the store that you can try out. I'm still playing around with these.