Just bought a Dash Cam for my car - HP F310. It is supposed to power up when the car is turned on and power down when the car is turned off. Seems to me that the only way it can do this is if the cigarette lighter plug that it is plugged into is "switched" (i.e., the plug is powered only when the vehicle is on). The plug in my car is unswitched, i. e.it is powered even without keys in the ignition. So, yes. When I turn my car off, the device stays on. Were I to leave the F310 plugged in, it would drain my battery. Seems to me this is a critical design flaw, rendering the device essentially unusable (unless I want to yank it out every time I get out of the car). Can anyone suggest a solution? Is there a way I can get my cig lighter to turn off when the car is off? I would really rather not mess with my car's electrics.