2 displays connected to same box with different output.

As an example:
Assume car PC system;
There are 2 LCD displays instralled into headrests, playing media file
simultaneously on both - usual stuff, VGA hub;
There is a LCD display in front of driver, running GPS Navigator.

Can I physically connect them to same box and have such an effect?
Is this possible at all?

I need to find a solution, even it involves dual VGA card or else.

Your help is highly appreciated.