BTW., fully agreed, just a minor correction to that figure, here's the fine print of the 2019 notes prospectus:
According to that the maximum conversion rate corresponds to a
$252.54 per share conversion rate.
Here's the relevant language where they are spelling out the conversion limits:
In addition, if the price of our common stock in the transaction is greater than $900.00 per share or less than $252.54 per share, in the case of the 2019 notes, or greater than $900.00 per share or less than $252.54 per share, in the case of the 2021 notes (in each case, subject to adjustment), no adjustment will be made to the applicable conversion rate. Moreover, in no event will the conversion rate per $1,000 principal amount of 2019 notes as a result of this adjustment exceed 3.9597 or the conversion rate per $1,000 principal amount of 2021 notes as a result of this adjustment exceed 3.9597, in each case subject to adjustments in the same manner as the conversion rate as set forth under “Description of Notes—Conversion Rights—Conversion Rate Adjustments”.
$1,000/3.9597 = $252.54.
Also note that in the Q2 conference call Elon clearly indicated that they want to pay all convertibles in internally generated cash:
Elon Reeve Musk - Tesla, Inc.
"Yeah, our default plan is we pay – we start paying off our debts. I don't mean refi-ing them, I mean paying them off. For example, there's a convert that's coming due soon, a couple hundred million, $900 million, something like that. We expect to pay that off with internally generated cash flow."
The '$900m converts' Elon was referring to are the $920m face value convertible notes due in March 2019.
i.e. he is certain that Tesla is cash flow positive to such an extent that they can easily pay off the convertible notes without any dilution.
But, as a contingency, they do have the option, via a simple Tesla board decision, to lower the conversion rate from $360 to $252.