While Tesla CEO Elon Musk teased last week about taking the company private, several suitors may have already been courting the electric car giant months ago. Saudi Arabia's Public Investment Fund, the country's sovereign wealth fund, is in talks with Tesla about becoming a significant investor in the buyout, sources told Bloomberg. The fund has already built up a nearly 5% stake in the company. Tesla may have already been courted by SoftBank last year, but sources have told Bloomberg that the Japanese conglomerate is no longer interested.