I understand your analysis, but I believe you are overlooking one key factor on how WS assigns value, and that is growth. If TA grows from $8B in 2016 to $47.2B in 2020 that is a 56% CAGR. The 5 year CAGR for the auto industry is 10.9%. (F: Ford Motor Co Top Competitors and Peers). That means Tesla would be growing revenue 5 times faster than the industry. The industry P/E is 8.5. WS does not assign the same P/E to a company growing at 55% that it does to one growing at 11%. So your 2020 valuation of TA is likely off by a factor of 2 or more, which would imply a valuation of at least $100B.
Look at Amazon. They are similar to Tesla in that they are using technology to disrupt very large low margin businesses. There net margin is only 2.5%. But their current P/E is 173, and that is at the low end of their historical P/E valuation. (Amazon.com PE Ratio (TTM) (AMZN)) They are also valued at 3.3 times sales, while the auto industry P/S is .5. I'm not saying that we can expect for Tesla in 2020 to have the same multiples as Amazon. But clearly with a big success for the Model 3 and 56% CAGR Tesla won't be valued the same as the legacy auto industry either.
@dennis It's tough to predict the multiple that investors will give to TSLA in 2020. But if the auto industry was a growing market, then I would agree that TSLA deserves a higher than 10 P/E multiple due to their high growth rate. But if the auto industry is shrinking and will shrink further, then in 2020 I'm expecting the sentiment around investing in the auto industry to be very, very bearish. I think the multiple investors give to auto makers will be much lower than they are now... especially once we see more evidence of the market shrinking (which I'm expecting) and some auto makers start to show financial stress (ie., beginnings of a bankruptcy slope). In other words, the whole industry will be hurting. And this will affect how investors view Tesla's auto making business, which is the part of the business that I'm isolating for valuation purposes in this exercise. So, if the auto market was healthy and growing in 2020, then I could see TSLA fetching a 15-20 P/E multiple for their auto making business. But if the auto market is shrinking and showing stress in 2020 (like I'm expecting), then I can see investors give a 10 P/E for their auto making business.
Of course, Tesla can compensate for a shrinking auto making industry by going heavy into the transportation as a service industry, which we've discussed at great length in this thread. This to me is where the money will be. In other words, limited profit/money in the auto making business, but more money in the transportation as service industry. If they can be successful in the transportation as a service industry, TSLA will receive a very high P/E multiple from investors, because it's a growing market.
Regarding the Amazon analogy, I understand what you're trying to get at... high growth and big market leads to high multiples for a company like Amazon. However, Amazon's situation and P/E is unique and complicated. Basically, it's not very helpful to look at their official P/E, but rather look at their P/E if they stopped investing and spending on growth. In that case, their profits would be much higher and their P/E would be more in line with other growing companies.
Also, on another note, when I say a 10 P/E multiple for TSLA in 2020 (or a 15-20 P/E multiple), I'm not referring to their actual official P/E multiple at that time. At that time, their actual P/E will likely be 100-200 P/E because they will likely be investing heavily into growth and will be foregoing profits as a result. So, yes if you look at actual P/E it will be a very high number, but that number is useless to me because it doesn't show much. To make that number useful, one needs to see Tesla's numbers in 2020 and suppose that they stop investing in growth and take that profit and use that profit number to come up with a P/E number. That's where I'm getting the 10 P/E number... it's more a 10 multiple of the price/"potential" earnings.
But again, the actual P/E will be much, much higher due to profits being quite low due to investment spending. And Tesla will likely be growing in very highly lucrative markets, like the ones I mentioned I'm excited about - transportation as a service and energy. The growth in those markets will fuel a higher P/E multiple from investors due to their growth prospects. But I'm just saying, regarding auto manufacturing ... it's not a very sexy industry, especially with the potential of the market shrinking, and thus this affects Tesla's valuation in terms of auto manufacturing.
There are caveats to this, of course. It's possible that autonomous driving provides a windfall of extra gross margin and profit, and propels Tesla to have gross margins on Model 3 higher than 25%, which would change my calculations. Also Tesla's growth projections could change as well.
But overall, as a TSLA investor I think the stock is fairly priced if one sees TSLA only as an auto maker, headed to 1 million cars in 2020. I think a current price range of $180-$260 is fair, considering there's significant risks ahead and likely dilution as well. And if Tesla, hypothetically, fails in all their other businesses (energy, ride sharing, semi, etc) then I wouldn't be surprised to see TSLA at $200-300/share in 2020 even with 1 million cars delivered in that year.
So, when skeptics of TSLA say that 1 million cars in 2020 is priced into TSLA, I don't necessarily disagree with them. Largely due to the diminishing prospects of the auto manufacturing industry as a whole in 2020, which will affect sentiment around Tesla's auto manufacturing business and the risks ahead for Tesla which need to be factored into Tesla's current stock price. But that's not why I'm a TSLA investor. I don't think the following have been priced in AT ALL into TSLA's stock price:
1. Tesla Network (transportation as a service for people)
2. Tesla Semi (transportation as a service for goods)
3. Tesla Energy
However, it's tricky for analysts, skeptics, and the public to attribute a lot of current value to TSLA for these future lines of businesses, because in a lot of ways it's placing a lot of faith in Tesla and Elon Musk to expand their business way beyond their current main line of business.
I think of the three lines of businesses I mentioned, Tesla Energy has the most to surprise people in the next 1-2 years... however this impact might be sedated by the complexities and costs of integrated SolarCity.
Tesla Network and Tesla Semi are still a ways out, especially for Tesla to accrue significant revenue from which would change TSLA's trajectory as a stock.