Tesla Needs Subaru or Maybe Mazda to Succeed

The recent reports that Elon Musk told his employees that the $35,000 Model 3 would cost $38,000 to build made me realize some things: first, -$3,000 is a pretty crappy profit margin, and second, Tesla needs some friends. Specifically, they need some friends who build lots of good cars yet have no clear plans to build...