Nice to see the car vs tent debate is still going strong The majority of cars have a selector switch on the interior light panel that switches or toggles the light between permanently off, perm on or on when doors open. I switch mine to perm off for the duration of the star party. Also, my car is pre-alarm so I don't have to worry about the alarm flash when locking/ unlocking the car. If this is the case then remove the fuses or cover the lights with black bin bags, old duvets covers or anything else that prevents light pollution at star parties. Keep your suggestions and experiences coming!