If you gently apply pressure to to gas pedal as the car rolls forward the ash tray cover won't slide open. So, obviously, the issue you are inquiring about involve two things. The first mechanical issue is the forces of gravity exerted on the lid and the second mechanical issue your ash tray lid suffers from is called the "Hauling Ass Syndrome", which activates the aforementioned first issue causing it to slide violently open and is a very common problem most of the ash tray covers in our cars, suffer from. :rofl: