Sustainable competitive advantage

  What are Tesla’s strengths and weaknesses? Does it have any sources of sustainable competitive advantage?     How is the Tesla Model S positioned in the market? How do its functional-level strategies align with this positioning?   Did it make sense for Tesla to enter the market with a high-end car, and plan a transition path to a mass-market car? Explain. Why did Tesla enter residential power storage and solar cell production? Is the company trying to do too many things at once?