How much money can Tesla Motors (TSLA 10.40%) make? For investors looking at the stock, that's the question. Given Tesla's sky-high stock price, anyone buying now needs to be convinced that the company can and will generate big profits in coming years.

Tesla CEO Elon Musk said last week that, in time, Tesla's profit margins could be comparable to iconic German sports-car maker Porsche's, long among the best in the business. In this video, Fool.com contributor John Rosevear explains what Musk was getting at -- and looks at what Musk will have to do to get Tesla to Porsche-like levels of profitability.