There is nothing stock about a computer in a vehicle.
Here's a simple way to get a "jeep skin" in StreetDeck:
Take a photo of your Jeep or a logo or what you want to use.
Put it in the DEFAULT skin directory. It needs to be renamed to a specific filename. I can't tell you what that is, as I'm presently at work.
Once the file is renamed, set the option in PRefereferences to display a static image.
SD will show your photo or graphic as the background instead of the visualization.
Tah-dah! A custom skin.
For further customization, change the colors to your liking.