Ford and Toyota will go their separate ways on hybrid development, announcing an end this week to talks on a possible partnership.
The carmakers had signed a Memorandum of Understanding (MoU) in 2011, but the project has failed to gain traction in the time since.
The project was expected to include the joint development of new and existing systems, along with a new hybrid system for use in rear-wheel-drive light commercial vehicles.
It was expected that a formal agreement would be reached by mid-2012, but after a protracted negotiation period, the companies have elected to pursue their own hybrid plans.
Although not confirmed, it is believed that Toyota's partnership with BMW in green technology development may have influenced the end of hybrid talks with Ford.
For its part, Toyota expects to have around 18 new and updated hybrid models available by the end of 2015, and Ford has confirmed it will have a rear-wheel-drive hybrid system ready by 2020.
It's not all over on the collaboration front, however. The 2011 MoU included plans to co-develop new telematics and in-car internet connectivity services, and possibilities for both are still being explored.