If you are keeping the laptop base in the car for the “PC” functionality then you then you won’t have too much of a problem doing this. You are normally able to extend the LCD connection cables to an OK length.
If you are thinking of just using the LCD panel from the laptop that is when things would get very messy. You would need to find a LCD driver for the display which would take the VGA signal from your PC and change it into a signal that your screen would be able to display. It’s not impossible but it’s not much fun either.