I need to customize the System Theme of Android Automotive, when i check the developer guide i could find that AOSP supports that and as per the developer site it is mentioned like
"OEM's are expected to have a parallel overlay structure to the car_product directory in their vendor directory that further extends the car_product overlay."
I need to create an overlay structure like the car_product in the vendor directory , Could anybody guide me to create the same . I have tried some methods mentioned in the sites , but these are not the same as mentioned in the developer site.