Our car has 4 gopros, I've been using the newer gopro "Smart Remote" with some success. I've read that it does not drain the battery as quickly as the older version "WiFi Remote". It can turn on and off the gopros as well, but they have to have WiFi turned on so they will still drain the battery overnight. I've had about 80% success rate of controlling the cameras with it overall (interior and exterior to the car). It makes the batteries last much longer, usually only have to change batteries once or not at all on a rally day.