It's not a "scam" in the traditionnal sense, it's riding the bubble while it's there, stock value is "supposed" to be about the company performance and potential but technically it doesn't have to be, it's about what some people are willing to pay for it (the stock, not the product the company sells) and that's all. That's also why tesla has such a valuation.
You can see it in the comments even here and other thread about this IPO, some people read the numbers, and some have just religious sounding comments about it being the biggest revolution ever or making the history book etc ...
And that's also why they need to keep elon as CEO because in the scenario where they remove it and get the best car company CEO and become a great regular car company that works and ships lots of great car ... Their valuation would be reduced a factor of ten
That's with falling sales, with no new product in sight and their latest release a big dud (despite SpaceX ordering massive amount of it to prop it up), and with a pricing and thus margin that is going to be massively lowered or beaten by Chinese ev. Protectionism by the US can only go so far, the US alone doesn't have a trillion dollar worthy car market.
They're also losing the race in self driving, and the biggest innovation in EV (semi instant charging) is coming from China not from them.
They had a lead and a massively advantageous legal situation and they squandered it, now you add the association of Elon to the brand making it toxic in many places and it's not looking rosy, the brand can be fine but it's valuation at one point or another will have a wake up day.
One advantage they have over other manufacturers is their willingness to move into (and out of) adjacent verticals to optimize product cost/design/etc.
They could be beaten by EVs from China/etc, but only time will tell.
https://www.teslarati.com/tesla-massive-order-semi-370-units...
It looks like MAN/Scania combined production last year, including buses, was about 1000.
https://www.sustainabletruckvan.com/traton-scania-man-electr...
Estimates for semi production this year are 5000-15000.
https://sherwood.news/tech/what-we-know-about-teslas-semi-tr...