General Motors and Toyota may have ended their 25-year run as production partners at the NUMMI plant in California. Yet despite the split, the two auto giants are still in the works on a new partnership. We’ve heard that Toyota is in talks with GM about the possibility of supplying a rendering of Toyota’s popular Prius hybrid vehicle to its Detroit-based counterpart.

While the plan has yet to be finalized, sources have said that the two heads of both companies - Toyota president Akio Toyoda and GM top dog Fritz Henderson - are expected to convene at the GM headquarters in Michigan sometime in August.

All of us are still sketchy on the details of this new joint project between Toyota and GM but the same sources have said that a GM-badged car that will be loosely rendered from the Prius will be produced at the NUMMI plant in California, in effect replacing the Pontiac Vibe, the car that will end its production at the same site in August.

Despite these new plans, GM is still moving forward with selling its stake in the NUMMI factory as part of a massive company overhaul the company is doing in order to get back on their feet after being dangerously close to being bankrupt earlier this year.

As far as Toyota is concerned, the Japanese-based car manufacturer is in the process of deciding what cars are going to be produced at the California plant to make up for the void left behind by GM. The Prius has been mentioned on more than one occasion as the car that will soon be produced there after talks of it going to a Mississippi plant was scratched not too long ago.

It’s beginning to look like this story has picked up more legs and that the partnership between Toyota and GM is far from finished.