Wrong, outlet in ashtray will shut off when key is removed from ignition.
Others outlet still be still on and turn off via the relay timer.
I believe it will turn off if more current is drained from the source
2008 Black Mercedes R350 w/P1 package/Ipod/Heated seats/7 seats, 10.2" Overhead LCD monitor w/ DVD player hard wired into factory sound system, B/U camera integrated W/6 Disc DVD Changer, Retrofitted OEM GPS Navigation, Passport Escort X8500 hardwired, 55watts HID low beam,Mtec HID fog lights, Philips LED Daylight lights.
2007 Acura RL w/Tech. package.(TVandNAV2go ,USA-spec audio, A-Spec body kit, 18 " Wheels, Wooden Steering Wheel, Wooden Shift Knob..