Even before Nissan introduced the Altima hybrid late in 2006 using a licensed Toyota hybrid system, they started development work on their own in-house system. More recently, there were indications that the Nissan system might first appear on Infiniti models. Now it looks like the system that is being developed will follow the path of Porsche and GM's Two-Mode hybrid system and allow electric assist at higher speeds. What's not known is whether the motor will be able to run along with the engine
Nissan took a shortcut to hybrid technology by licensing Toyota's Hybrid Synergy Drive for the Altima Hybrid. But that's not the end game for Nissan. They are currently developing their own in-house system that should debut around the end of the decade.