By having the PC stay on for five minutes after turning off the car, the PC is still on when you get back in the car and you don't have to wait for it to sboot up (or resume from hibernation or whatever).
I know my DSATX does this. I'm pretty sure that the Opus can, as well. I can't tell you how to achieve this.Best thing would be to go into hibernate mode once ACC is off and wait xx seconds before cutting power completly to the computer.
Is there any way to acheive this with the OPUS 250?