Almost none of it is from Paypal any longer (except as seed money for other ventures). He got about half a (EDIT: significantly less than a quarter) billion from Paypal and invested it split into Tesla and SpaceX. I think he owns most of (or close to most of) SpaceX, which is worth at least $10B, plus a bunch of shares of Tesla (but definitely not near half), which is worth over $50B.

So I'd say his networth now comes from (very) roughly 50:50 Tesla and SpaceX. Paypal money is long gone.

He borrows money against his shares to fund projects like this without diluting control.

He got about a quarter of a billion.

He almost went bankrupt in ~2008.

Edit: my correction of a correction needs to be corrected

> In October 2002, PayPal was acquired by eBay for US$1.5 billion in stock, of which Musk received US$165 million.

https://en.m.wikipedia.org/wiki/Elon_Musk

Which of course makes the line from TFA 'Elon Musk, a man of means by no means,...' make no sense.

I get that it was presumably a reference to the song 'King of the Road', but since the rest of the story had nothing to do with being a hobo, I'm unsure of the author's intent.

No barely any of it is from Paypal.

Paypal was sold in 2002 for like 1.5 billion to Ebay, and Musk had like 10% of the shares.

He does however own something like 25% of Tesla. Thats about 12.5 billion.