 Sicking has devoted his career to designing impact energy management systems, specifically focusing on crashworthy safety systems.Sicking has developed numerous "next generation" designs that have significantly reduced the risk of injury and fatality to motorists, from highway drivers to NASCAR racers.His first global success was the ET-2000, the first energy absorbing guardrail terminal – a device that sits over the end of a guardrail, flattening the guardrail when it is hit by a vehicle.