From what I've seen working with commercial vehicles for years, airbag suspension systems usually have a 3 way leveler / pressure control valve that either opens to the air system, to the atmosphere or remains closed based on the location of travel of the suspension. So when you add more weight, the rear end drops which opens the valve adding pressure to the bags until the rear end rises enough to close the valve again. If the rear end raises from weight being removed it opens the valve dumping air from the bags. Will we ever see this feature? Extremely important feature of commercial vehicle air suspension systems. If so, I hope you guys are able to add sound effects to it as well, atleast the dumping of air. You can hear the system dumping air briefly sometimes when the vehicle goes over bumps.
