Elon Musk wants to take Tesla private for $79 billion - but he needs help. What would it take for investors to double their money in five years?

This calculator shows how many vehicles Tesla would have to sell to hit that target. You can plug in your assumptions and size up a private Tesla's prospects.

We've assumed Tesla can shoulder an extra $12 billion of debt, which takes the initial investment down to $67 billion.

See more detailed inputs, and our assumptions about Tesla's production, by downloading the Excel spreadsheet.

For more interactive calculators and agenda-setting comment visit: BREAKINGVIEWS