CPU has 100w TDP. That means a max power draw of 100w.
Poor CPU choice for an environment where you're limited on available power.
Even w/ the M4ATX.
8GB of RAM is overkill for any vehicle application.
In addition, you'll need to run a 64bit OS to take advantage of anything over 3.5GB, and there simply isn't as much support for a 64bit OS in frontends, drivers, and so on.
Question - What were you researching? What criteria did you use to select these specific components?