It was five years ago that Ford first brought up the concept of using Hydraulic Launch Assist (HLA) in some of the heavy duty trucks that they were looking to create. While we have seen some of those heavy duty trucks come to life we have yet to see Ford use HLA, until now.
The system uses a hydraulic pump/motor and high pressure accumulator to recapture kinetic energy when braking, which can then be released when the truck is accelerating to assist the engine. It’s a type of mild hybrid system really, though its effect is promised to be substantial.