HTC Car Panel
Google Car Home
To install Google Car Home you will need to install HTC Car Panel too because for some reason Google Car Home doesn't install an icon for sense roms.
This is where Car Panel comes in, when you open the app drawer select Car Panel select Car Home.
One of the things I like about Google Car Home is the fact that it can automatically open the app once it sees that you are connected to your cars bluetooth and disables it once you disconnect.
The only thing that doesn't work is when you go to settings and select Android Setting it will force close(probably cause of sense)