Assuming Twitter is a car

Assuming Twitter is a car, Elon Musk, who used to sit comfortably in the back seat (with 81 million followers), moved to the front seat this year (9.2% stake), and has recently found it nice to drive himself (offer acquisition).
According to disclosures in early April, Musk is currently Twitter's largest shareholder, holding more shares than the company's co-founder Jack Dorsey and the Vanguard Group. On April 12, after Musk expressed his decision not to join the Twitter board, some analysts speculated that he would make an acquisition, because according to Twitter’s rules, if he is on the board, he cannot hold more than 14.9% of the stock. That is, as a board member, Musk cannot buy Twitter. Now the situation is clear.
On April 14, Musk’s offer was $54.20 per share, an 18% premium over the previous day’s closing price, and the company’s total valuation was $43 billion. The CEO of Tesla and SpaceX and the richest man in the world, Musk is worth an estimated $259 billion.
In typical Musk fashion, he stressed that this was the best and final offer, and hinted that if the deal didn't go through, he might pull out of the investment, "If the deal doesn't go through, given my lack of confidence in management, I don't believe I can. To drive the necessary changes in the public markets, I will need to reconsider my position as a shareholder."
Other major shareholders have rejected Musk, though, and Saudi Prince Alwaleed bin Talal said he doesn't think Musk's offer comes close to Twitter's intrinsic value, given Twitter's growth prospects.
Musk has hired Morgan Stanley as his financial advisor. He mentioned in a just-concluded TED talk that he has "sufficient" assets to buy Twitter, and that he can "technically" buy it; he also has an alternative plan if the bid is rejected by Twitter, but didn't elaborate illustrate.