I would like to put a Linux computer in my car, but one challenge is that normally when the ignition is turned off, power is cut. This is bad for Linux which wants to go through a shutdown process before turning off. Is there any way to configure Linux to tolerate power being cut abruptly?
One relevant technology I know of is Android's special "Power Manager" extension that is used on a lot of PDAs. I think the basic way this works is that the Android has two power feeds: a main feed, and a lower power "sleep" feed. If the "off" button is pressed, then the system gets forced into sleep mode and the main power is turned off and the computer gets a small trickle of power, just enough to maintain it in sleep mode. This sort of thing is kind of what I would need for the car. Is there any way to achieve it with normal Linux?