Can you implemement a softer shutdown when setting a shutdown delay? For example fade out the music for 3 seconds instead of suddenly turn of.
Maybe it would also be possible to display after turning off the ignition a button to disable shutdown completly - maybe if you just wan to stop for getting some gas.
"Softer" shutdown after turing off ignition
This one is just a delay after the ACC is disconnected. Can't do a fade out.
Because ACC does power down