I doubt Tesla will split anytime soon. Look at Amazon, it's share price is almost $2,000/share.
Fundamentally, the Board of Directors is who decides whether or not to split a company's shares. The reason to do so is to allow more small investors to buy shares. It used to be that you'd pay a premium if you didn't buy 100 shares at a time. Now that's no longer an issue. So the incentive to do a stock split is less.
Frankly, both Amazon and Tesla have incentives to NOT do a stock split. Both companies had naysayers banging away at their stock price for years. Having a high stock price is an advertisement of how far and fast the company has grown. It reminds people that this company is now real force, and it's also a bit of a middle finger to all the naysayers.
I personally wouldn't do a stock split right now, for those reasons alone.
Just catching up on the thread. Regarding stock splits, if Tesla doesn't split, the big question will be, should I buy a car or shall I buy a share. At one point I remember this dilemma regarding an iPhone.
Sorry, will just see myself out.
Please try to limit the number of posts. It's getting hard to keep up. May I suggest 3 a day per member. I think it's a generous allowance.