All electric:
"New for 2013, an electric power steering system developed for the ZL1 is standard on all SS. This variable ratio, variable effort system provides light efforts for easy maneuverability at parking-lot speeds as well as increased resistance at higher speeds, providing more feedback and a more direct steering feel."

"The EPS system is more efficient than hydraulic systems since it only needs to provide assist when the driver is actually steering, rather than rotating the pump constantly, and it keeps the environmentalists happy since there's no harmful fluid involved that needs to be flushed or drained."

Who would have thought??