After a long time (6 month of sketching and drawing), finally got the courage to implementing it. First i use my Acer Travelmate 4061 as pilot testing.

Then ... the rest

Inverter

GPS + WiFi connected to ...
Then after a month testing on road and off road, I finally put in my PC.
Mod a bit
Attach two LCD, one for me and one for passenger
With Geek My Avanza
Now, my pc spec:
My front end
My Winamp