i have a mac mini under the seat running windows xp only. the front end im using is centrafuse 2.0 i have a lilliput led lcd screen stripped down and put into a double di n enclosure to fit in the dash. i had to get an amp and run the stock speakers to it and connected the mac mini audio out to the amps input for audio. i have a cartentix cnx-p1900 dc-dc power supply running the mini and the screen. it has a wire that connects into the minis power button cable and when it senses that you turned the ignition off it sends a button press witch puts the mini into standby. with xp in standby it cuts signal to the moniter and that goes to sleep. the carnetix keeps power to the mini and screen so there is no long boot up. once car is turned on the mini wakes back up and screen turns on automatically. if the carnetix senses battery voltage drop below 10 volts it cuts all power to mini and the screen to prevent battery from dying.