Tesla-SolarCity merger could be fraught with danger -- and big potential

On the surface, a merger between Tesla Motors and SolarCity looks like a winner: They have a similar customer base, use each other's manufacturing facilities and technologies -- and of course, there's the family ties.
Tesla founder and CEO Elon Musk is also the co-founder and chairman of SolarCity, which is run by fellow co-founder and CEO Lyndon Rive and his brother, CTO Peter Rive -- both of them Musk's cousins. Musk owns 22% of SolarCity's stock and 21% of Tesla.
"In my personal opinion, thi