National Electric Vehicle Sweden AB (NEVS), the owner of the sorta-still-there Saab automobile brand, has reached a deal with Dongfeng Motor Corp. in which the China-based automaker will help NEVS develop greener vehicles. NEVS and Dongfeng have been working together since July, though the agreement was officially announced Monday. The companies say the agreement relates to so-called "new-energy" vehicles, though neither details of what those new energy vehicles will be nor f