CNN is reporting that the hybrid version of the Cayenne SUV will be 25% more efficient than the current model and will hit showrooms in 2-3 years. Capable of cruising at, but not accelerating up to, 70mph on batteries alone, the Cayenne hybrid will be much faster in battery mode than current hybrids, which only manage 30-40mph. Porsche are currently seeking 300 new engineers to help with the completion of this and the Panamera project. [via CNN]