No, a market crash would not touch Tesla as the stock and the company are two different things. The fact that a lot of people want to pay top dollar to own a share of the pie is not the Tesla operations churning out cars (or not.)
They now have a warchest of billions of cash and cash equivalents (like BTC) that they can use to expand without going back to the public market for cash for a while. Especially with their cash flows looking a lot better now.