"It's not a pragmatic deal because frankly, the synergies between the two companies are difficult to find," Ghosn told Bloomberg.

Now, Ghosn is back in the public eye to weigh in on Nissan's potential merger with Honda, and he hasn't lost his fiery touch. That kicks off this Friday edition of Critical Materials, our morning roundup of auto industry and tech news.

Former Nissan Motor Co. Chairman Carlos Ghosn, who fled Japan while awaiting trial on charges of financial misconduct, said Monday th