What’s the difference between the Green Racing Challenge and the Green Racing Cup?
Two levels of achievement are specified in the Green Racing Protocols. Green Racing Challenge events require three of the five elements we developed for green racing. Events have to use renewable bio-based fuels, multiple fuels, engine types and configurations, and allow hybrid energy recovery systems. Green Racing Cup events use all the elements of the Green Racing Challenge events but have two additional requirements. To be eligible the event must regulate engine performance through energy allocations and require the race cars to use some form of emission controls. These additional elements promote greater energy efficiency by limiting fuel and encourage the development of new emission control systems. The Cup is the ultimate form of Green Racing.
