Solar is 55% of all new installations in the USA and Tesla is the leader in solar installations with SolarCity. $/watt installed is only going down with scale.
Batteries are becoming the platform for transportation and Tesla owns 50% of the global manufacturing capacity. $/watt is also trending down with scale.
Charging stations will replace gas stations and Tesla owns a major percentage of the stock.
The question is over what timescale is Tesla over/undervalued? The genius is that there is always going to be friction between long and short term values. This shortsightedness is the weak link of Wall Street. But if it's overvalued then short the stock!
The Model E has already made Tesla an energy comany with a very successful product, "the Model 3 is selling more units in the U.S. than any comparably priced midsize sedan, including those offered by Mercedes-Benz, BMW, and Audi."[1]
I don't own a Tesla or Tesla stock.
[0] http://ir.tesla.com/static-files/0fbefe56-326c-412e-a33c-aa1... [1] https://www.bloomberg.com/news/features/2018-07-12/how-tesla...