Use an inverter to run the computer. Before doing that, search on "inverter" and "noise" to get an idea of what could be the result.
Remember that you will have to rig it up to start manually each time. You will also have to shut it down using the power button or the menu each time. You can hibernate to prevent booting up each time but will have to wait in the car until it is finished hibernating each time, or until it has shut down.
Cutting the power is an option but YMMV and *could* scramble the disk at some point.
Some inverters will draw power even if the devices plugged into them are off and could drain your battery.
Originally posted by ghettocruzer
I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.